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[SCM] GNU Inetutils branch, master, updated. v2.2-14-g1d5c923


From: Simon Josefsson
Subject: [SCM] GNU Inetutils branch, master, updated. v2.2-14-g1d5c923
Date: Fri, 3 Sep 2021 16:43:53 -0400 (EDT)

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU Inetutils ".

The branch, master has been updated
       via  1d5c9235286db76a2e41e62636e831945a848fa1 (commit)
      from  a1b4cb859f13d0fce6bc0221c5a28a279be28850 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=1d5c9235286db76a2e41e62636e831945a848fa1


commit 1d5c9235286db76a2e41e62636e831945a848fa1
Author: Simon Josefsson <simon@josefsson.org>
Date:   Fri Sep 3 18:30:42 2021 +0200

    maint: Use copyright year ranges for readability.
    
    * cfg.mk (update-copyright-env): Add, from coreutils.
    (VC_LIST_ALWAYS_EXCLUDE_REGEX): Add, for update-copyright exceptions.
    * README: Add info about copyright year ranges.
    * *: Update copyright notices.

diff --git a/ChangeLog.0 b/ChangeLog.0
index 35ec144..bb06850 100644
--- a/ChangeLog.0
+++ b/ChangeLog.0
@@ -2021,10 +2021,7 @@ Sat Dec 30 06:36:41 1995  Roland McGrath  
<roland@churchy.gnu.ai.mit.edu>
        * ftpd/ftpcmd.y: Allow `SITE IDLE 0' for non-anonymous user to
        disable idle timer.
 
-    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-    2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-    2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-    Inc.
+    Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ChangeLog.1 b/ChangeLog.1
index ad515b1..3fee98d 100644
--- a/ChangeLog.1
+++ b/ChangeLog.1
@@ -17058,9 +17058,7 @@ russion letters.  Thanks to Vladas Lapinskas 
<lapinskas@mail.iae.lt>.
        * syslogd/syslogd/syslogd.c: Include <version.h>.
        (main): Add option -V (version).
 
-    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-    2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
-    2019, 2020, 2021 Free Software Foundation, Inc.
+    Copyright (C) 1999-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/Makefile.am b/Makefile.am
index c299364..617c27b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/NEWS b/NEWS
index db6c069..c975c46 100644
--- a/NEWS
+++ b/NEWS
@@ -732,9 +732,7 @@ Version 1.1:
  systems where weak refs are supported).
 
 ----------------------------------------------------------------------
-Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
 Permission is granted to anyone to make or distribute verbatim copies
 of this document as received, in any medium, provided that the
diff --git a/README b/README
index e51f4d5..70c93ab 100644
--- a/README
+++ b/README
@@ -130,13 +130,14 @@ Some known deficiencies:
 
 See the file INSTALL for installation instructions.
 
+For any copyright year range specified as YYYY-ZZZZ in this package
+note that the range specifies every single year in that closed interval.
+
 Please send all bug reports to <bug-inetutils@gnu.org>.
 
 ========================================================================
 
-Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright
diff --git a/README-alpha b/README-alpha
index 67fad89..0bcaca0 100644
--- a/README-alpha
+++ b/README-alpha
@@ -1,7 +1,5 @@
 This is the GNU Inetutils package.
-Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-2020, 2021 Free Software Foundation, Inc.
+Copyright (C) 1999-2021 Free Software Foundation, Inc.
 See end of file for copying conditions.
 
 This document describes the actions needed to build GNU inetutils from
diff --git a/THANKS b/THANKS
index 98d70d4..dfe39d5 100644
--- a/THANKS
+++ b/THANKS
@@ -37,9 +37,7 @@ Todd R. Eigenschink <todd@tekinteractive.com>
 
 ========================================================================
 
-Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright
diff --git a/am/check_macro.m4 b/am/check_macro.m4
index 8883ffd..3413ae1 100644
--- a/am/check_macro.m4
+++ b/am/check_macro.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/check_member.m4 b/am/check_member.m4
index 0f4b095..d6a6a0c 100644
--- a/am/check_member.m4
+++ b/am/check_member.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/config_paths.m4 b/am/config_paths.m4
index 27c0ca8..18d9131 100644
--- a/am/config_paths.m4
+++ b/am/config_paths.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/enable.m4 b/am/enable.m4
index 90326af..4c836ec 100644
--- a/am/enable.m4
+++ b/am/enable.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/flushleft.m4 b/am/flushleft.m4
index 8bfeb4c..42a37f8 100644
--- a/am/flushleft.m4
+++ b/am/flushleft.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/krb5.m4 b/am/krb5.m4
index 76c0893..eb5afa7 100644
--- a/am/krb5.m4
+++ b/am/krb5.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/libcurses.m4 b/am/libcurses.m4
index 1774270..b862280 100644
--- a/am/libcurses.m4
+++ b/am/libcurses.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/libidn.m4 b/am/libidn.m4
index a7bcf8b..03b2bfa 100644
--- a/am/libidn.m4
+++ b/am/libidn.m4
@@ -1,6 +1,5 @@
 # libidn.m4 serial 2
-dnl Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-dnl Free Software Foundation, Inc.
+dnl Copyright (C) 2013-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/am/result.m4 b/am/result.m4
index e69179a..292f20f 100644
--- a/am/result.m4
+++ b/am/result.m4
@@ -1,7 +1,5 @@
 dnl
-dnl Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-dnl 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2021 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GNU Inetutils.
 dnl
diff --git a/bootstrap.conf b/bootstrap.conf
index d04facc..cdd1f57 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -1,6 +1,5 @@
 # bootstrap.conf - Bootstrap configuration.
-# Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-# 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2007-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/cfg.mk b/cfg.mk
index 0a3b168..0ae4b4f 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -1,6 +1,5 @@
 #
-# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
@@ -27,6 +26,12 @@ translation_project_ =
 
 _makefile_at_at_check_exceptions = ' && !/PATHDEFS_MAKE/'
 
+VC_LIST_ALWAYS_EXCLUDE_REGEX = ^doc/fdl-1.3.texi$$
+update-copyright-env = \
+  UPDATE_COPYRIGHT_FORCE=1 \
+  UPDATE_COPYRIGHT_USE_INTERVALS=2 \
+  UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
+
 local-checks-to-skip = \
        sc_cast_of_x_alloc_return_value \
        sc_copyright_check \
diff --git a/configure.ac b/configure.ac
index 49995a9..b3bce9b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,5 @@
 # configure.ac - Configuration for inetutils
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-# 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-# 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 8606956..3b68b6b 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-# Free Software Foundation, Inc.
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/doc/inetutils.texi b/doc/inetutils.texi
index cc2d91a..8f8f4e3 100644
--- a/doc/inetutils.texi
+++ b/doc/inetutils.texi
@@ -59,9 +59,7 @@
 This manual documents version @value{VERSION} of the @sc{gnu} networking
 utilities.
 
-Copyright @copyright{} 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-2020, 2021 Free Software Foundation, Inc.
+Copyright @copyright{} 2000--2021 Free Software Foundation, Inc.
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document
diff --git a/ftp/Makefile.am b/ftp/Makefile.am
index 0d30987..e8155cb 100644
--- a/ftp/Makefile.am
+++ b/ftp/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/ftp/cmds.c b/ftp/cmds.c
index 559a121..957cb27 100644
--- a/ftp/cmds.c
+++ b/ftp/cmds.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/cmdtab.c b/ftp/cmdtab.c
index fe1cf39..190b4be 100644
--- a/ftp/cmdtab.c
+++ b/ftp/cmdtab.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/domacro.c b/ftp/domacro.c
index 931e9ee..eb6daf4 100644
--- a/ftp/domacro.c
+++ b/ftp/domacro.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/extern.h b/ftp/extern.h
index b77a483..9f4781e 100644
--- a/ftp/extern.h
+++ b/ftp/extern.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/ftp.c b/ftp/ftp.c
index 730a855..ca4fe6d 100644
--- a/ftp/ftp.c
+++ b/ftp/ftp.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/ftp_var.h b/ftp/ftp_var.h
index 4c81cf7..69d313b 100644
--- a/ftp/ftp_var.h
+++ b/ftp/ftp_var.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/main.c b/ftp/main.c
index 666c866..1726498 100644
--- a/ftp/main.c
+++ b/ftp/main.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftp/ruserpass.c b/ftp/ruserpass.c
index 2578be1..dd09bb7 100644
--- a/ftp/ruserpass.c
+++ b/ftp/ruserpass.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/Makefile.am b/ftpd/Makefile.am
index 5efabf4..dfe388b 100644
--- a/ftpd/Makefile.am
+++ b/ftpd/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/ftpd/auth.c b/ftpd/auth.c
index 82f6142..2a01be4 100644
--- a/ftpd/auth.c
+++ b/ftpd/auth.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/conf.c b/ftpd/conf.c
index e67e8a0..479de42 100644
--- a/ftpd/conf.c
+++ b/ftpd/conf.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/extern.h b/ftpd/extern.h
index 8075f27..bb8b23e 100644
--- a/ftpd/extern.h
+++ b/ftpd/extern.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/ftpcmd.y b/ftpd/ftpcmd.y
index 1072004..9f8cc1a 100644
--- a/ftpd/ftpcmd.y
+++ b/ftpd/ftpcmd.y
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/ftpd.c b/ftpd/ftpd.c
index f4b29d5..6849f7d 100644
--- a/ftpd/ftpd.c
+++ b/ftpd/ftpd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/logwtmp.c b/ftpd/logwtmp.c
index 45cd550..48ce83f 100644
--- a/ftpd/logwtmp.c
+++ b/ftpd/logwtmp.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/pam.c b/ftpd/pam.c
index 8c7a361..c3f344d 100644
--- a/ftpd/pam.c
+++ b/ftpd/pam.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/popen.c b/ftpd/popen.c
index 54fe130..75ab9c8 100644
--- a/ftpd/popen.c
+++ b/ftpd/popen.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ftpd/server_mode.c b/ftpd/server_mode.c
index dbcec59..0b20c3c 100644
--- a/ftpd/server_mode.c
+++ b/ftpd/server_mode.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/Makefile.am b/ifconfig/Makefile.am
index 7b1f953..a790d06 100644
--- a/ifconfig/Makefile.am
+++ b/ifconfig/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-# Free Software Foundation, Inc.
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/ifconfig/changeif.c b/ifconfig/changeif.c
index 4a22701..4e4af46 100644
--- a/ifconfig/changeif.c
+++ b/ifconfig/changeif.c
@@ -1,7 +1,5 @@
 /* changeif.c -- change the configuration of a network interface
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/flags.c b/ifconfig/flags.c
index 6298d05..2cb8819 100644
--- a/ifconfig/flags.c
+++ b/ifconfig/flags.c
@@ -1,7 +1,5 @@
 /* flags.c -- network interface flag handling
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/flags.h b/ifconfig/flags.h
index 8066055..ad40a46 100644
--- a/ifconfig/flags.h
+++ b/ifconfig/flags.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/ifconfig.c b/ifconfig/ifconfig.c
index a0edf96..2a0c6b3 100644
--- a/ifconfig/ifconfig.c
+++ b/ifconfig/ifconfig.c
@@ -1,7 +1,5 @@
 /* ifconfig.c -- network interface configuration utility
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/ifconfig.h b/ifconfig/ifconfig.h
index d79e044..e6495b7 100644
--- a/ifconfig/ifconfig.h
+++ b/ifconfig/ifconfig.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/options.c b/ifconfig/options.c
index c6721ba..bdb424f 100644
--- a/ifconfig/options.c
+++ b/ifconfig/options.c
@@ -1,7 +1,5 @@
 /* options.c -- process the command line options
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/options.h b/ifconfig/options.h
index fd8f6c7..486cc84 100644
--- a/ifconfig/options.h
+++ b/ifconfig/options.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/printif.c b/ifconfig/printif.c
index 17667a8..d2301a3 100644
--- a/ifconfig/printif.c
+++ b/ifconfig/printif.c
@@ -1,7 +1,5 @@
 /* printif.c -- print an interface configuration
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/printif.h b/ifconfig/printif.h
index b0fd535..2cbface 100644
--- a/ifconfig/printif.h
+++ b/ifconfig/printif.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system.c b/ifconfig/system.c
index c60eaea..a3ecf84 100644
--- a/ifconfig/system.c
+++ b/ifconfig/system.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system.h b/ifconfig/system.h
index 235ceee..aaf10c7 100644
--- a/ifconfig/system.h
+++ b/ifconfig/system.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/Makefile.am b/ifconfig/system/Makefile.am
index bbb3152..a6d51e0 100644
--- a/ifconfig/system/Makefile.am
+++ b/ifconfig/system/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-# Free Software Foundation, Inc.
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/ifconfig/system/bsd.c b/ifconfig/system/bsd.c
index 21a9129..d81dba2 100644
--- a/ifconfig/system/bsd.c
+++ b/ifconfig/system/bsd.c
@@ -1,7 +1,5 @@
 /* bsd.c -- BSD specific code for ifconfig
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/bsd.h b/ifconfig/system/bsd.h
index c8022ab..5645eca 100644
--- a/ifconfig/system/bsd.h
+++ b/ifconfig/system/bsd.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/generic.c b/ifconfig/system/generic.c
index 47bdb43..3d6ad69 100644
--- a/ifconfig/system/generic.c
+++ b/ifconfig/system/generic.c
@@ -1,7 +1,5 @@
 /* generic.c -- generic system code for ifconfig
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/generic.h b/ifconfig/system/generic.h
index 54518fc..ec3c396 100644
--- a/ifconfig/system/generic.h
+++ b/ifconfig/system/generic.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/hurd.c b/ifconfig/system/hurd.c
index ff85d72..9d868d9 100644
--- a/ifconfig/system/hurd.c
+++ b/ifconfig/system/hurd.c
@@ -1,6 +1,5 @@
 /* hurd.c -- Code for ifconfig specific to GNU/Hurd.
-  Copyright (C) 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2015-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/hurd.h b/ifconfig/system/hurd.h
index 3549fa5..7ae5783 100644
--- a/ifconfig/system/hurd.h
+++ b/ifconfig/system/hurd.h
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2015-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/linux.c b/ifconfig/system/linux.c
index f1bbc06..f5522dc 100644
--- a/ifconfig/system/linux.c
+++ b/ifconfig/system/linux.c
@@ -1,7 +1,5 @@
 /* linux.c -- Linux specific code for ifconfig
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/linux.h b/ifconfig/system/linux.h
index c2eb936..8af4c98 100644
--- a/ifconfig/system/linux.h
+++ b/ifconfig/system/linux.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/qnx.c b/ifconfig/system/qnx.c
index df6088d..2f994ca 100644
--- a/ifconfig/system/qnx.c
+++ b/ifconfig/system/qnx.c
@@ -1,7 +1,5 @@
 /* qnx.c -- QNX specific code for ifconfig
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/qnx.h b/ifconfig/system/qnx.h
index 1b08e07..12e65d8 100644
--- a/ifconfig/system/qnx.h
+++ b/ifconfig/system/qnx.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/solaris.c b/ifconfig/system/solaris.c
index ccce464..bb2b3b9 100644
--- a/ifconfig/system/solaris.c
+++ b/ifconfig/system/solaris.c
@@ -1,7 +1,5 @@
 /* solaris.c -- Solaris specific code for ifconfig
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ifconfig/system/solaris.h b/ifconfig/system/solaris.h
index e9cc8cd..24aa6aa 100644
--- a/ifconfig/system/solaris.h
+++ b/ifconfig/system/solaris.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libicmp/Makefile.am b/libicmp/Makefile.am
index 22e2388..13030ad 100644
--- a/libicmp/Makefile.am
+++ b/libicmp/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-# Free Software Foundation, Inc.
+# Copyright (C) 2001-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/libicmp/icmp.h b/libicmp/icmp.h
index be46dfc..989ab82 100644
--- a/libicmp/icmp.h
+++ b/libicmp/icmp.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libicmp/icmp_address.c b/libicmp/icmp_address.c
index c968019..2272336 100644
--- a/libicmp/icmp_address.c
+++ b/libicmp/icmp_address.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libicmp/icmp_cksum.c b/libicmp/icmp_cksum.c
index 83bcbb3..f55fc50 100644
--- a/libicmp/icmp_cksum.c
+++ b/libicmp/icmp_cksum.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libicmp/icmp_echo.c b/libicmp/icmp_echo.c
index f363c28..0ef5db6 100644
--- a/libicmp/icmp_echo.c
+++ b/libicmp/icmp_echo.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libicmp/icmp_timestamp.c b/libicmp/icmp_timestamp.c
index 82e62ba..96853f5 100644
--- a/libicmp/icmp_timestamp.c
+++ b/libicmp/icmp_timestamp.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/Makefile.am b/libinetutils/Makefile.am
index 1559a8f..3c5f131 100644
--- a/libinetutils/Makefile.am
+++ b/libinetutils/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/libinetutils/argcv.c b/libinetutils/argcv.c
index 6957295..0c9f388 100644
--- a/libinetutils/argcv.c
+++ b/libinetutils/argcv.c
@@ -1,7 +1,5 @@
 /* argcv.c - simple functions for parsing input based on whitespace
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/argcv.h b/libinetutils/argcv.h
index 9857beb..efec58f 100644
--- a/libinetutils/argcv.h
+++ b/libinetutils/argcv.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/cleansess.c b/libinetutils/cleansess.c
index 73ff733..4c8ca49 100644
--- a/libinetutils/cleansess.c
+++ b/libinetutils/cleansess.c
@@ -1,7 +1,5 @@
 /* cleansess.c - Clean up the pty and frob utmp/wtmp accordingly after logout
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/daemon.c b/libinetutils/daemon.c
index 4f5a1da..33fe5bd 100644
--- a/libinetutils/daemon.c
+++ b/libinetutils/daemon.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/defauthors.c b/libinetutils/defauthors.c
index 4379e88..4bb1da5 100644
--- a/libinetutils/defauthors.c
+++ b/libinetutils/defauthors.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2009-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/des_rw.c b/libinetutils/des_rw.c
index b1011b3..1129f4d 100644
--- a/libinetutils/des_rw.c
+++ b/libinetutils/des_rw.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/if_index.c b/libinetutils/if_index.c
index a4eb95a..e91ff36 100644
--- a/libinetutils/if_index.c
+++ b/libinetutils/if_index.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/kcmd.c b/libinetutils/kcmd.c
index bc16aa9..f80d2ee 100644
--- a/libinetutils/kcmd.c
+++ b/libinetutils/kcmd.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/kerberos5.c b/libinetutils/kerberos5.c
index aca0309..10684f5 100644
--- a/libinetutils/kerberos5.c
+++ b/libinetutils/kerberos5.c
@@ -1,6 +1,5 @@
 /* kerberos5.c -- functions to use Heimdal's and MIT's Kerberos V
-  Copyright (C) 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-  Software Foundation, Inc.
+  Copyright (C) 2014-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/kerberos5_def.h b/libinetutils/kerberos5_def.h
index 753ca6f..1bac5b6 100644
--- a/libinetutils/kerberos5_def.h
+++ b/libinetutils/kerberos5_def.h
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-  Software Foundation, Inc.
+  Copyright (C) 2014-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/krcmd.c b/libinetutils/krcmd.c
index ef3d28c..9a3e9ab 100644
--- a/libinetutils/krcmd.c
+++ b/libinetutils/krcmd.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/libinetutils.h b/libinetutils/libinetutils.h
index 0926718..33452d9 100644
--- a/libinetutils/libinetutils.h
+++ b/libinetutils/libinetutils.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 2006-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/localhost.c b/libinetutils/localhost.c
index a1b676f..e8f479a 100644
--- a/libinetutils/localhost.c
+++ b/libinetutils/localhost.c
@@ -1,7 +1,5 @@
 /* localhost.c - A slightly more convenient wrapper for gethostname
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/logwtmp.c b/libinetutils/logwtmp.c
index 5396ff4..da8738a 100644
--- a/libinetutils/logwtmp.c
+++ b/libinetutils/logwtmp.c
@@ -1,7 +1,5 @@
 /* logwtmp.c - A version of BSDs `logwtmp' that should be widely portable
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/logwtmpko.c b/libinetutils/logwtmpko.c
index ef01f6d..23b4bf0 100644
--- a/libinetutils/logwtmpko.c
+++ b/libinetutils/logwtmpko.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/setsig.c b/libinetutils/setsig.c
index cc03912..948d693 100644
--- a/libinetutils/setsig.c
+++ b/libinetutils/setsig.c
@@ -1,7 +1,5 @@
 /* setsig.c - Set a signal handler, trying to turning on the SA_RESTART bit
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/shishi.c b/libinetutils/shishi.c
index 2e53560..ff0aec4 100644
--- a/libinetutils/shishi.c
+++ b/libinetutils/shishi.c
@@ -1,7 +1,5 @@
 /* shishi.c -- functions to use kerberos V with shishi
-  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2005-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/shishi_def.h b/libinetutils/shishi_def.h
index c094cba..916284c 100644
--- a/libinetutils/shishi_def.h
+++ b/libinetutils/shishi_def.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2005-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/tftpsubs.c b/libinetutils/tftpsubs.c
index b41e9f8..ff82d32 100644
--- a/libinetutils/tftpsubs.c
+++ b/libinetutils/tftpsubs.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-  2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1998-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/tftpsubs.h b/libinetutils/tftpsubs.h
index 5455c5c..6a9b96c 100644
--- a/libinetutils/tftpsubs.h
+++ b/libinetutils/tftpsubs.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-  2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1998-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/ttymsg.c b/libinetutils/ttymsg.c
index 3e7e70b..1353e50 100644
--- a/libinetutils/ttymsg.c
+++ b/libinetutils/ttymsg.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/utmp_init.c b/libinetutils/utmp_init.c
index 3044a31..86223cc 100644
--- a/libinetutils/utmp_init.c
+++ b/libinetutils/utmp_init.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-  2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2107, 2018,
-  2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1999-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libinetutils/utmp_logout.c b/libinetutils/utmp_logout.c
index 04f35ee..578b107 100644
--- a/libinetutils/utmp_logout.c
+++ b/libinetutils/utmp_logout.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-  2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
-  2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1999-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/Makefile.am b/libls/Makefile.am
index c7dd4f1..3511d68 100644
--- a/libls/Makefile.am
+++ b/libls/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-# 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-# 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2000-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/libls/cmp.c b/libls/cmp.c
index 65fe9e4..8a0d2f3 100644
--- a/libls/cmp.c
+++ b/libls/cmp.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/extern.h b/libls/extern.h
index 5c6076a..70f6737 100644
--- a/libls/extern.h
+++ b/libls/extern.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/ls.c b/libls/ls.c
index ee779c3..78a2d5a 100644
--- a/libls/ls.c
+++ b/libls/ls.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/ls.h b/libls/ls.h
index edd91ee..a865756 100644
--- a/libls/ls.h
+++ b/libls/ls.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/print.c b/libls/print.c
index f28e827..060b50b 100644
--- a/libls/print.c
+++ b/libls/print.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/stat_flags.c b/libls/stat_flags.c
index ad14435..c72c2e1 100644
--- a/libls/stat_flags.c
+++ b/libls/stat_flags.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libls/util.c b/libls/util.c
index ae7bc3f..abf0071 100644
--- a/libls/util.c
+++ b/libls/util.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-  2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/Makefile.am b/libtelnet/Makefile.am
index d01e482..f20fca1 100644
--- a/libtelnet/Makefile.am
+++ b/libtelnet/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/libtelnet/auth-proto.h b/libtelnet/auth-proto.h
index f49f46a..b39f15f 100644
--- a/libtelnet/auth-proto.h
+++ b/libtelnet/auth-proto.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/auth.c b/libtelnet/auth.c
index eb4ae23..0ba0b27 100644
--- a/libtelnet/auth.c
+++ b/libtelnet/auth.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/auth.h b/libtelnet/auth.h
index ce91a2f..5fdfe5c 100644
--- a/libtelnet/auth.h
+++ b/libtelnet/auth.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/enc-proto.h b/libtelnet/enc-proto.h
index ab0782d..3042d1f 100644
--- a/libtelnet/enc-proto.h
+++ b/libtelnet/enc-proto.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/enc_des.c b/libtelnet/enc_des.c
index 4cf716a..bb8ebd2 100644
--- a/libtelnet/enc_des.c
+++ b/libtelnet/enc_des.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/encrypt.c b/libtelnet/encrypt.c
index 4973b00..c62f68a 100644
--- a/libtelnet/encrypt.c
+++ b/libtelnet/encrypt.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/encrypt.h b/libtelnet/encrypt.h
index a7fbdaa..6f30762 100644
--- a/libtelnet/encrypt.h
+++ b/libtelnet/encrypt.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/forward.c b/libtelnet/forward.c
index e565a08..f45225e 100644
--- a/libtelnet/forward.c
+++ b/libtelnet/forward.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/genget.c b/libtelnet/genget.c
index d9e04df..296e439 100644
--- a/libtelnet/genget.c
+++ b/libtelnet/genget.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/genget.h b/libtelnet/genget.h
index 3bb3bae..c1a0ee6 100644
--- a/libtelnet/genget.h
+++ b/libtelnet/genget.h
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2009-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/getent.c b/libtelnet/getent.c
index 27a1767..a55d4ab 100644
--- a/libtelnet/getent.c
+++ b/libtelnet/getent.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/kerberos.c b/libtelnet/kerberos.c
index 4074909..8b5e2db 100644
--- a/libtelnet/kerberos.c
+++ b/libtelnet/kerberos.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/kerberos5.c b/libtelnet/kerberos5.c
index 77d4023..e4023b8 100644
--- a/libtelnet/kerberos5.c
+++ b/libtelnet/kerberos5.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/key-proto.h b/libtelnet/key-proto.h
index b5e8d23..c8c6fb7 100644
--- a/libtelnet/key-proto.h
+++ b/libtelnet/key-proto.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/misc-proto.h b/libtelnet/misc-proto.h
index c24abf9..babed9b 100644
--- a/libtelnet/misc-proto.h
+++ b/libtelnet/misc-proto.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/misc.c b/libtelnet/misc.c
index 6a06dec..b1730e9 100644
--- a/libtelnet/misc.c
+++ b/libtelnet/misc.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/misc.h b/libtelnet/misc.h
index b6d058a..4cdd1d4 100644
--- a/libtelnet/misc.h
+++ b/libtelnet/misc.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/read_passwd.c b/libtelnet/read_passwd.c
index 60315c8..fe9fcaf 100644
--- a/libtelnet/read_passwd.c
+++ b/libtelnet/read_passwd.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/libtelnet/shishi.c b/libtelnet/shishi.c
index a6bafbc..4f900c8 100644
--- a/libtelnet/shishi.c
+++ b/libtelnet/shishi.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
-  2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-  Software Foundation, Inc.
+  Copyright (C) 2003-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/man/Makefile.am b/man/Makefile.am
index 134db1c..c020534 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -1,6 +1,5 @@
 #
-# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/paths b/paths
index f3e7d9f..c5ecbaf 100644
--- a/paths
+++ b/paths
@@ -1,7 +1,5 @@
 # paths - Paths for inetutils
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-# 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-# 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/ping/Makefile.am b/ping/Makefile.am
index 68748f2..e246957 100644
--- a/ping/Makefile.am
+++ b/ping/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/ping/libping.c b/ping/libping.c
index 5ee33b9..a25fd31 100644
--- a/ping/libping.c
+++ b/ping/libping.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2008-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping.c b/ping/ping.c
index 49ee2a4..70235ae 100644
--- a/ping/ping.c
+++ b/ping/ping.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-  2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1998-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping.h b/ping/ping.h
index 87cdfca..f9c6d56 100644
--- a/ping/ping.h
+++ b/ping/ping.h
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2008-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping6.c b/ping/ping6.c
index 8d97541..35356e8 100644
--- a/ping/ping6.c
+++ b/ping/ping6.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2005-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping6.h b/ping/ping6.h
index 741d607..27c2126 100644
--- a/ping/ping6.h
+++ b/ping/ping6.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2005-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_address.c b/ping/ping_address.c
index 7817c98..18d09bc 100644
--- a/ping/ping_address.c
+++ b/ping/ping_address.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_common.c b/ping/ping_common.c
index 2fcae92..6e3ace0 100644
--- a/ping/ping_common.c
+++ b/ping/ping_common.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2005-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_common.h b/ping/ping_common.h
index 65e3e60..12a7f4c 100644
--- a/ping/ping_common.h
+++ b/ping/ping_common.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 2005-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_echo.c b/ping/ping_echo.c
index 3ab116f..81794b5 100644
--- a/ping/ping_echo.c
+++ b/ping/ping_echo.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_impl.h b/ping/ping_impl.h
index 5c9f5cc..fc764e0 100644
--- a/ping/ping_impl.h
+++ b/ping/ping_impl.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_router.c b/ping/ping_router.c
index 125d8d3..fdbdc29 100644
--- a/ping/ping_router.c
+++ b/ping/ping_router.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/ping/ping_timestamp.c b/ping/ping_timestamp.c
index 17f51d1..7e510b0 100644
--- a/ping/ping_timestamp.c
+++ b/ping/ping_timestamp.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/Makefile.am b/src/Makefile.am
index 635842a..6b0264e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/src/dnsdomainname.c b/src/dnsdomainname.c
index 9687a28..6a160d8 100644
--- a/src/dnsdomainname.c
+++ b/src/dnsdomainname.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020,
-  2021 Free Software Foundation, Inc.
+  Copyright (C) 2012-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/hostname.c b/src/hostname.c
index e37fe81..eeed3dc 100644
--- a/src/hostname.c
+++ b/src/hostname.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2008-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/inetd.c b/src/inetd.c
index 04d3361..43dea05 100644
--- a/src/inetd.c
+++ b/src/inetd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/logger.c b/src/logger.c
index 25b6e2b..c2306e0 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2009-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/logprio.h b/src/logprio.h
index 57cb30f..fc24b0a 100644
--- a/src/logprio.h
+++ b/src/logprio.h
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-  2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2011-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rcp.c b/src/rcp.c
index 743930c..d7047b0 100644
--- a/src/rcp.c
+++ b/src/rcp.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rexec.c b/src/rexec.c
index a1c2bd4..5862e04 100644
--- a/src/rexec.c
+++ b/src/rexec.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2009-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rexecd.c b/src/rexecd.c
index 4777a6d..f4425d2 100644
--- a/src/rexecd.c
+++ b/src/rexecd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rlogin.c b/src/rlogin.c
index 2abb2d2..694a18a 100644
--- a/src/rlogin.c
+++ b/src/rlogin.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rlogind.c b/src/rlogind.c
index 3be3b45..ccd32b4 100644
--- a/src/rlogind.c
+++ b/src/rlogind.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rsh.c b/src/rsh.c
index 79bfbc2..2649097 100644
--- a/src/rsh.c
+++ b/src/rsh.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/rshd.c b/src/rshd.c
index e83fbab..12369ac 100644
--- a/src/rshd.c
+++ b/src/rshd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/syslogd.c b/src/syslogd.c
index fb71e4c..fef056d 100644
--- a/src/syslogd.c
+++ b/src/syslogd.c
@@ -1,7 +1,5 @@
 /* syslogd - log system messages
-  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-  2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-  2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/tftp.c b/src/tftp.c
index 75ef663..1382a08 100644
--- a/src/tftp.c
+++ b/src/tftp.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/tftpd.c b/src/tftpd.c
index 8906591..4f0d2bd 100644
--- a/src/tftpd.c
+++ b/src/tftpd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/traceroute.c b/src/traceroute.c
index c9620d6..0ac71bb 100644
--- a/src/traceroute.c
+++ b/src/traceroute.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2007-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/src/uucpd.c b/src/uucpd.c
index 072c222..baaa3b5 100644
--- a/src/uucpd.c
+++ b/src/uucpd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/summary.sh.in b/summary.sh.in
index 407bc5b..b5510a4 100644
--- a/summary.sh.in
+++ b/summary.sh.in
@@ -1,7 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-# Free Software Foundation, Inc.
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/talk/Makefile.am b/talk/Makefile.am
index 9b3d4a1..c64f960 100644
--- a/talk/Makefile.am
+++ b/talk/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/talk/ctl.c b/talk/ctl.c
index 7facf7d..c43053f 100644
--- a/talk/ctl.c
+++ b/talk/ctl.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/ctl_transact.c b/talk/ctl_transact.c
index cbb733f..ed0dc44 100644
--- a/talk/ctl_transact.c
+++ b/talk/ctl_transact.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/display.c b/talk/display.c
index 08908fe..13c93a0 100644
--- a/talk/display.c
+++ b/talk/display.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/get_addrs.c b/talk/get_addrs.c
index b6e61df..a950c2c 100644
--- a/talk/get_addrs.c
+++ b/talk/get_addrs.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/get_names.c b/talk/get_names.c
index ac21209..065c1dc 100644
--- a/talk/get_names.c
+++ b/talk/get_names.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/init_disp.c b/talk/init_disp.c
index d5e0c25..f7d8ba4 100644
--- a/talk/init_disp.c
+++ b/talk/init_disp.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/invite.c b/talk/invite.c
index ce1d083..5072527 100644
--- a/talk/invite.c
+++ b/talk/invite.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/io.c b/talk/io.c
index 17ea593..768394a 100644
--- a/talk/io.c
+++ b/talk/io.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/look_up.c b/talk/look_up.c
index 1167597..70e6c30 100644
--- a/talk/look_up.c
+++ b/talk/look_up.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/msgs.c b/talk/msgs.c
index 8c01b54..d653fbd 100644
--- a/talk/msgs.c
+++ b/talk/msgs.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/talk.c b/talk/talk.c
index af55227..38cce77 100644
--- a/talk/talk.c
+++ b/talk/talk.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/talk.h b/talk/talk.h
index d830e64..7172b71 100644
--- a/talk/talk.h
+++ b/talk/talk.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talk/talk_ctl.h b/talk/talk_ctl.h
index 739ecf7..8d7bb20 100644
--- a/talk/talk_ctl.h
+++ b/talk/talk_ctl.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/Makefile.am b/talkd/Makefile.am
index 7a37394..0efda2c 100644
--- a/talkd/Makefile.am
+++ b/talkd/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/talkd/acl.c b/talkd/acl.c
index a55e8b0..5175ac1 100644
--- a/talkd/acl.c
+++ b/talkd/acl.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/announce.c b/talkd/announce.c
index 7d10d72..690f5d7 100644
--- a/talkd/announce.c
+++ b/talkd/announce.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-  2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1994-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/intalkd.h b/talkd/intalkd.h
index e48d93c..ad43dda 100644
--- a/talkd/intalkd.h
+++ b/talkd/intalkd.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-  2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2001-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/print.c b/talkd/print.c
index af61d0a..1d34b6d 100644
--- a/talkd/print.c
+++ b/talkd/print.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/process.c b/talkd/process.c
index 32cfe8d..fe6b8d4 100644
--- a/talkd/process.c
+++ b/talkd/process.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/table.c b/talkd/table.c
index ffe0306..a34bd77 100644
--- a/talkd/table.c
+++ b/talkd/table.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/talkd/talkd.c b/talkd/talkd.c
index 08e3a5b..8b62a96 100644
--- a/talkd/talkd.c
+++ b/talkd/talkd.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/Makefile.am b/telnet/Makefile.am
index 2ccce31..539ff76 100644
--- a/telnet/Makefile.am
+++ b/telnet/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/telnet/authenc.c b/telnet/authenc.c
index 6cc4d2a..eb518d6 100644
--- a/telnet/authenc.c
+++ b/telnet/authenc.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/commands.c b/telnet/commands.c
index 26cedba..f1fba3c 100644
--- a/telnet/commands.c
+++ b/telnet/commands.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/defines.h b/telnet/defines.h
index 8f87d50..e12431f 100644
--- a/telnet/defines.h
+++ b/telnet/defines.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/externs.h b/telnet/externs.h
index 8d10549..f63ff42 100644
--- a/telnet/externs.h
+++ b/telnet/externs.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/general.h b/telnet/general.h
index 691a3b0..4cc6b05 100644
--- a/telnet/general.h
+++ b/telnet/general.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/krb4-proto.h b/telnet/krb4-proto.h
index 10afa7e..9cef32b 100644
--- a/telnet/krb4-proto.h
+++ b/telnet/krb4-proto.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/main.c b/telnet/main.c
index 1a96d35..ef3ca88 100644
--- a/telnet/main.c
+++ b/telnet/main.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/network.c b/telnet/network.c
index 546d06c..825d413 100644
--- a/telnet/network.c
+++ b/telnet/network.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/ring.c b/telnet/ring.c
index 42e6464..43b50db 100644
--- a/telnet/ring.c
+++ b/telnet/ring.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/ring.h b/telnet/ring.h
index a2c7655..f2b209f 100644
--- a/telnet/ring.h
+++ b/telnet/ring.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/sys_bsd.c b/telnet/sys_bsd.c
index 157e038..8e578eb 100644
--- a/telnet/sys_bsd.c
+++ b/telnet/sys_bsd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/telnet.c b/telnet/telnet.c
index afeeb99..1640a50 100644
--- a/telnet/telnet.c
+++ b/telnet/telnet.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/terminal.c b/telnet/terminal.c
index d65428a..966ef79 100644
--- a/telnet/terminal.c
+++ b/telnet/terminal.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/tn3270.c b/telnet/tn3270.c
index e8ae7a4..2b906ee 100644
--- a/telnet/tn3270.c
+++ b/telnet/tn3270.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/types.h b/telnet/types.h
index f322792..5b5d27e 100644
--- a/telnet/types.h
+++ b/telnet/types.h
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnet/utilities.c b/telnet/utilities.c
index 08571cd..c130c50 100644
--- a/telnet/utilities.c
+++ b/telnet/utilities.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-  2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
-  2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation,
-  Inc.
+  Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/Makefile.am b/telnetd/Makefile.am
index 520d168..cc68e14 100644
--- a/telnetd/Makefile.am
+++ b/telnetd/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-# 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1997-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/telnetd/pty.c b/telnetd/pty.c
index afaf7fd..efbb549 100644
--- a/telnetd/pty.c
+++ b/telnetd/pty.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-  2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-  Software Foundation, Inc.
+  Copyright (C) 2002-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/slc.c b/telnetd/slc.c
index 8cdd5e5..44a2a40 100644
--- a/telnetd/slc.c
+++ b/telnetd/slc.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/state.c b/telnetd/state.c
index aba3bec..87a430c 100644
--- a/telnetd/state.c
+++ b/telnetd/state.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/telnetd.c b/telnetd/telnetd.c
index db5d212..3d3db24 100644
--- a/telnetd/telnetd.c
+++ b/telnetd/telnetd.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/telnetd.h b/telnetd/telnetd.h
index bf8cce6..ad9eb8d 100644
--- a/telnetd/telnetd.h
+++ b/telnetd/telnetd.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-  2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1996-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/term.c b/telnetd/term.c
index b490a8e..58c0a9a 100644
--- a/telnetd/term.c
+++ b/telnetd/term.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-  2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-  Software Foundation, Inc.
+  Copyright (C) 2002-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/termstat.c b/telnetd/termstat.c
index aaf9ef6..febe6b3 100644
--- a/telnetd/termstat.c
+++ b/telnetd/termstat.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/telnetd/utility.c b/telnetd/utility.c
index fc82cf3..e72df5e 100644
--- a/telnetd/utility.c
+++ b/telnetd/utility.c
@@ -1,8 +1,5 @@
 /*
-  Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-  2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
-  2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free Software
-  Foundation, Inc.
+  Copyright (C) 1993-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 82235b0..f5215dd 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,6 +1,5 @@
 #
-# Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-# 2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2007-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/addrpeek.c b/tests/addrpeek.c
index 347a48a..663339e 100644
--- a/tests/addrpeek.c
+++ b/tests/addrpeek.c
@@ -1,6 +1,5 @@
 /* addrpeek - testing service for Inetd: remote address, environment vars
-  Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
-  2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2010-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/dnsdomainname.sh b/tests/dnsdomainname.sh
index e7a9e87..60828ed 100755
--- a/tests/dnsdomainname.sh
+++ b/tests/dnsdomainname.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020,
-# 2021 Free Software Foundation, Inc.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/ftp-localhost.sh b/tests/ftp-localhost.sh
index 974e948..442f9c1 100755
--- a/tests/ftp-localhost.sh
+++ b/tests/ftp-localhost.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-# 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/ftp-parser.sh b/tests/ftp-parser.sh
index e08fa24..9ca487a 100755
--- a/tests/ftp-parser.sh
+++ b/tests/ftp-parser.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-# Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/hostname.sh b/tests/hostname.sh
index f009135..0d3be69 100755
--- a/tests/hostname.sh
+++ b/tests/hostname.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-# 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/identify.c b/tests/identify.c
index f556a62..9a67910 100644
--- a/tests/identify.c
+++ b/tests/identify.c
@@ -1,6 +1,5 @@
 /* identify -- Probe system and report characteristica.
-  Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2013-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/ifconfig.sh b/tests/ifconfig.sh
index 418e390..13ebeb3 100755
--- a/tests/ifconfig.sh
+++ b/tests/ifconfig.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-# 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/ifconfig_modes.sh b/tests/ifconfig_modes.sh
index 85a7497..e6bfd9e 100644
--- a/tests/ifconfig_modes.sh
+++ b/tests/ifconfig_modes.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-# Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/inetd.sh b/tests/inetd.sh
index 65bcc02..947c242 100755
--- a/tests/inetd.sh
+++ b/tests/inetd.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-# Free Software Foundation, Inc.
+# Copyright (C) 2013-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/libls.sh b/tests/libls.sh
index 7edf728..c4e0474 100755
--- a/tests/libls.sh
+++ b/tests/libls.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-# Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/localhost.c b/tests/localhost.c
index 019b238..c250224 100644
--- a/tests/localhost.c
+++ b/tests/localhost.c
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2007-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/ls.c b/tests/ls.c
index abb2c49..8992eb5 100644
--- a/tests/ls.c
+++ b/tests/ls.c
@@ -1,6 +1,5 @@
 /* ls - program buildable from libls
-  Copyright (C) 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Free
-  Software Foundation, Inc.
+  Copyright (C) 2014-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/ping-localhost.sh b/tests/ping-localhost.sh
index f59ca86..f608927 100755
--- a/tests/ping-localhost.sh
+++ b/tests/ping-localhost.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/readutmp.c b/tests/readutmp.c
index 26ec915..d6ec8e2 100644
--- a/tests/readutmp.c
+++ b/tests/readutmp.c
@@ -1,6 +1,5 @@
 /* readutmp - Basic test of existing utmp/utmpx access.
-  Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
-  2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2010-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/runtime-ipv6.c b/tests/runtime-ipv6.c
index b0fd30b..1d0bac4 100644
--- a/tests/runtime-ipv6.c
+++ b/tests/runtime-ipv6.c
@@ -1,5 +1,5 @@
 /* runtime-ipv6 - Check that system is able to set IPv6 address.
-  Copyright (C) 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2020-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/syslogd.sh b/tests/syslogd.sh
index 5733e1b..a6215b9 100755
--- a/tests/syslogd.sh
+++ b/tests/syslogd.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-# 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/tcpget.c b/tests/tcpget.c
index 29de726..1103abb 100644
--- a/tests/tcpget.c
+++ b/tests/tcpget.c
@@ -1,6 +1,5 @@
 /* tcpget - get single response from a TCP port.
-  Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
-  Free Software Foundation, Inc.
+  Copyright (C) 2013-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/telnet-localhost.sh b/tests/telnet-localhost.sh
index 518fe55..e40a9c3 100755
--- a/tests/telnet-localhost.sh
+++ b/tests/telnet-localhost.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
-# 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/test-snprintf.c b/tests/test-snprintf.c
index 9affcbe..352d1de 100644
--- a/tests/test-snprintf.c
+++ b/tests/test-snprintf.c
@@ -1,5 +1,5 @@
 /* test-snprintf - Check whether snprintf allows doubly used strings.
-  Copyright (C) 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2020-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/tests/tftp.sh b/tests/tftp.sh
index ded4fa0..862e94f 100755
--- a/tests/tftp.sh
+++ b/tests/tftp.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
-# 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2010-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/tools.sh.in b/tests/tools.sh.in
index 7e91748..7e33db6 100644
--- a/tests/tools.sh.in
+++ b/tests/tools.sh.in
@@ -1,5 +1,4 @@
-# Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020,
-# 2021 Free Software Foundation, Inc.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/traceroute-localhost.sh b/tests/traceroute-localhost.sh
index e500957..2fafb29 100755
--- a/tests/traceroute-localhost.sh
+++ b/tests/traceroute-localhost.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2009-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/utmp.sh b/tests/utmp.sh
index a8b78c0..320ac65 100755
--- a/tests/utmp.sh
+++ b/tests/utmp.sh
@@ -1,7 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020,
-# 2021 Free Software Foundation, Inc.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/tests/waitdaemon.c b/tests/waitdaemon.c
index 66af6ca..9373824 100644
--- a/tests/waitdaemon.c
+++ b/tests/waitdaemon.c
@@ -1,6 +1,5 @@
 /* waitdaemon -- Verify that waitdaemon() is functional.
-  Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
-  2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2010-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/whois/Makefile.am b/whois/Makefile.am
index d7104ad..1f606ae 100644
--- a/whois/Makefile.am
+++ b/whois/Makefile.am
@@ -1,7 +1,5 @@
 #
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/as_del_list b/whois/as_del_list
index 7e44a78..e72fa5a 100644
--- a/whois/as_del_list
+++ b/whois/as_del_list
@@ -1,6 +1,4 @@
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/data.h b/whois/data.h
index 82e22b6..458e424 100644
--- a/whois/data.h
+++ b/whois/data.h
@@ -1,6 +1,5 @@
 /*
-  Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 2009-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/whois/ip6_del_list b/whois/ip6_del_list
index 7f01882..ceaf3da 100644
--- a/whois/ip6_del_list
+++ b/whois/ip6_del_list
@@ -1,4 +1,4 @@
-# Copyright (C) 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2020-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/ip_del_list b/whois/ip_del_list
index b640024..79017e1 100644
--- a/whois/ip_del_list
+++ b/whois/ip_del_list
@@ -1,6 +1,4 @@
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/make_as_del.pl b/whois/make_as_del.pl
index d6c5781..4d1a1c3 100755
--- a/whois/make_as_del.pl
+++ b/whois/make_as_del.pl
@@ -1,8 +1,6 @@
 #!/usr/bin/perl -w
 
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/make_ip6_del.pl b/whois/make_ip6_del.pl
index 09fd504..97d1df2 100755
--- a/whois/make_ip6_del.pl
+++ b/whois/make_ip6_del.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/perl
 
-# Copyright (C) 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 2020-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/make_ip_del.pl b/whois/make_ip_del.pl
index c86e52b..a4338db 100755
--- a/whois/make_ip_del.pl
+++ b/whois/make_ip_del.pl
@@ -1,8 +1,6 @@
 #!/usr/bin/perl -w
 
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/make_tld_serv.pl b/whois/make_tld_serv.pl
index b77b917..487031f 100755
--- a/whois/make_tld_serv.pl
+++ b/whois/make_tld_serv.pl
@@ -1,8 +1,6 @@
 #!/usr/bin/perl -w
 
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/tld_serv_list b/whois/tld_serv_list
index 41083c1..5b1f0d1 100644
--- a/whois/tld_serv_list
+++ b/whois/tld_serv_list
@@ -1,6 +1,4 @@
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-# 2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
 #
 # This file is part of GNU Inetutils.
 #
diff --git a/whois/whois.c b/whois/whois.c
index 3e4f192..14be10f 100644
--- a/whois/whois.c
+++ b/whois/whois.c
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-  2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1998-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 
diff --git a/whois/whois.h b/whois/whois.h
index 095d71f..c39fd99 100644
--- a/whois/whois.h
+++ b/whois/whois.h
@@ -1,7 +1,5 @@
 /*
-  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-  2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
-  2018, 2019, 2020, 2021 Free Software Foundation, Inc.
+  Copyright (C) 1998-2021 Free Software Foundation, Inc.
 
   This file is part of GNU Inetutils.
 

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog.0                   | 5 +----
 ChangeLog.1                   | 4 +---
 Makefile.am                   | 4 +---
 NEWS                          | 4 +---
 README                        | 7 ++++---
 README-alpha                  | 4 +---
 THANKS                        | 4 +---
 am/check_macro.m4             | 4 +---
 am/check_member.m4            | 4 +---
 am/config_paths.m4            | 4 +---
 am/enable.m4                  | 4 +---
 am/flushleft.m4               | 4 +---
 am/krb5.m4                    | 4 +---
 am/libcurses.m4               | 4 +---
 am/libidn.m4                  | 3 +--
 am/result.m4                  | 4 +---
 bootstrap.conf                | 3 +--
 cfg.mk                        | 9 +++++++--
 configure.ac                  | 4 +---
 doc/Makefile.am               | 4 +---
 doc/inetutils.texi            | 4 +---
 ftp/Makefile.am               | 4 +---
 ftp/cmds.c                    | 5 +----
 ftp/cmdtab.c                  | 5 +----
 ftp/domacro.c                 | 5 +----
 ftp/extern.h                  | 5 +----
 ftp/ftp.c                     | 5 +----
 ftp/ftp_var.h                 | 5 +----
 ftp/main.c                    | 5 +----
 ftp/ruserpass.c               | 5 +----
 ftpd/Makefile.am              | 4 +---
 ftpd/auth.c                   | 4 +---
 ftpd/conf.c                   | 4 +---
 ftpd/extern.h                 | 5 +----
 ftpd/ftpcmd.y                 | 5 +----
 ftpd/ftpd.c                   | 5 +----
 ftpd/logwtmp.c                | 4 +---
 ftpd/pam.c                    | 4 +---
 ftpd/popen.c                  | 5 +----
 ftpd/server_mode.c            | 4 +---
 ifconfig/Makefile.am          | 4 +---
 ifconfig/changeif.c           | 4 +---
 ifconfig/flags.c              | 4 +---
 ifconfig/flags.h              | 4 +---
 ifconfig/ifconfig.c           | 4 +---
 ifconfig/ifconfig.h           | 4 +---
 ifconfig/options.c            | 4 +---
 ifconfig/options.h            | 4 +---
 ifconfig/printif.c            | 4 +---
 ifconfig/printif.h            | 4 +---
 ifconfig/system.c             | 4 +---
 ifconfig/system.h             | 4 +---
 ifconfig/system/Makefile.am   | 4 +---
 ifconfig/system/bsd.c         | 4 +---
 ifconfig/system/bsd.h         | 4 +---
 ifconfig/system/generic.c     | 4 +---
 ifconfig/system/generic.h     | 4 +---
 ifconfig/system/hurd.c        | 3 +--
 ifconfig/system/hurd.h        | 3 +--
 ifconfig/system/linux.c       | 4 +---
 ifconfig/system/linux.h       | 4 +---
 ifconfig/system/qnx.c         | 4 +---
 ifconfig/system/qnx.h         | 4 +---
 ifconfig/system/solaris.c     | 4 +---
 ifconfig/system/solaris.h     | 4 +---
 libicmp/Makefile.am           | 4 +---
 libicmp/icmp.h                | 4 +---
 libicmp/icmp_address.c        | 4 +---
 libicmp/icmp_cksum.c          | 4 +---
 libicmp/icmp_echo.c           | 4 +---
 libicmp/icmp_timestamp.c      | 4 +---
 libinetutils/Makefile.am      | 4 +---
 libinetutils/argcv.c          | 4 +---
 libinetutils/argcv.h          | 4 +---
 libinetutils/cleansess.c      | 4 +---
 libinetutils/daemon.c         | 4 +---
 libinetutils/defauthors.c     | 3 +--
 libinetutils/des_rw.c         | 4 +---
 libinetutils/if_index.c       | 4 +---
 libinetutils/kcmd.c           | 4 +---
 libinetutils/kerberos5.c      | 3 +--
 libinetutils/kerberos5_def.h  | 3 +--
 libinetutils/krcmd.c          | 4 +---
 libinetutils/libinetutils.h   | 4 +---
 libinetutils/localhost.c      | 4 +---
 libinetutils/logwtmp.c        | 4 +---
 libinetutils/logwtmpko.c      | 4 +---
 libinetutils/setsig.c         | 4 +---
 libinetutils/shishi.c         | 4 +---
 libinetutils/shishi_def.h     | 4 +---
 libinetutils/tftpsubs.c       | 4 +---
 libinetutils/tftpsubs.h       | 4 +---
 libinetutils/ttymsg.c         | 4 +---
 libinetutils/utmp_init.c      | 4 +---
 libinetutils/utmp_logout.c    | 4 +---
 libls/Makefile.am             | 4 +---
 libls/cmp.c                   | 4 +---
 libls/extern.h                | 4 +---
 libls/ls.c                    | 4 +---
 libls/ls.h                    | 4 +---
 libls/print.c                 | 4 +---
 libls/stat_flags.c            | 4 +---
 libls/util.c                  | 4 +---
 libtelnet/Makefile.am         | 4 +---
 libtelnet/auth-proto.h        | 4 +---
 libtelnet/auth.c              | 5 +----
 libtelnet/auth.h              | 4 +---
 libtelnet/enc-proto.h         | 4 +---
 libtelnet/enc_des.c           | 5 +----
 libtelnet/encrypt.c           | 5 +----
 libtelnet/encrypt.h           | 4 +---
 libtelnet/forward.c           | 4 +---
 libtelnet/genget.c            | 5 +----
 libtelnet/genget.h            | 3 +--
 libtelnet/getent.c            | 5 +----
 libtelnet/kerberos.c          | 5 +----
 libtelnet/kerberos5.c         | 5 +----
 libtelnet/key-proto.h         | 4 +---
 libtelnet/misc-proto.h        | 4 +---
 libtelnet/misc.c              | 4 +---
 libtelnet/misc.h              | 4 +---
 libtelnet/read_passwd.c       | 4 +---
 libtelnet/shishi.c            | 4 +---
 man/Makefile.am               | 3 +--
 paths                         | 4 +---
 ping/Makefile.am              | 4 +---
 ping/libping.c                | 3 +--
 ping/ping.c                   | 4 +---
 ping/ping.h                   | 3 +--
 ping/ping6.c                  | 4 +---
 ping/ping6.h                  | 4 +---
 ping/ping_address.c           | 4 +---
 ping/ping_common.c            | 4 +---
 ping/ping_common.h            | 4 +---
 ping/ping_echo.c              | 4 +---
 ping/ping_impl.h              | 4 +---
 ping/ping_router.c            | 4 +---
 ping/ping_timestamp.c         | 4 +---
 src/Makefile.am               | 4 +---
 src/dnsdomainname.c           | 3 +--
 src/hostname.c                | 3 +--
 src/inetd.c                   | 5 +----
 src/logger.c                  | 3 +--
 src/logprio.h                 | 3 +--
 src/rcp.c                     | 5 +----
 src/rexec.c                   | 3 +--
 src/rexecd.c                  | 5 +----
 src/rlogin.c                  | 5 +----
 src/rlogind.c                 | 5 +----
 src/rsh.c                     | 5 +----
 src/rshd.c                    | 5 +----
 src/syslogd.c                 | 4 +---
 src/tftp.c                    | 5 +----
 src/tftpd.c                   | 5 +----
 src/traceroute.c              | 3 +--
 src/uucpd.c                   | 5 +----
 summary.sh.in                 | 3 +--
 talk/Makefile.am              | 4 +---
 talk/ctl.c                    | 5 +----
 talk/ctl_transact.c           | 5 +----
 talk/display.c                | 5 +----
 talk/get_addrs.c              | 5 +----
 talk/get_names.c              | 5 +----
 talk/init_disp.c              | 5 +----
 talk/invite.c                 | 5 +----
 talk/io.c                     | 5 +----
 talk/look_up.c                | 5 +----
 talk/msgs.c                   | 5 +----
 talk/talk.c                   | 5 +----
 talk/talk.h                   | 5 +----
 talk/talk_ctl.h               | 5 +----
 talkd/Makefile.am             | 4 +---
 talkd/acl.c                   | 4 +---
 talkd/announce.c              | 5 +----
 talkd/intalkd.h               | 4 +---
 talkd/print.c                 | 4 +---
 talkd/process.c               | 4 +---
 talkd/table.c                 | 4 +---
 talkd/talkd.c                 | 4 +---
 telnet/Makefile.am            | 4 +---
 telnet/authenc.c              | 5 +----
 telnet/commands.c             | 5 +----
 telnet/defines.h              | 5 +----
 telnet/externs.h              | 5 +----
 telnet/general.h              | 5 +----
 telnet/krb4-proto.h           | 5 +----
 telnet/main.c                 | 5 +----
 telnet/network.c              | 5 +----
 telnet/ring.c                 | 5 +----
 telnet/ring.h                 | 5 +----
 telnet/sys_bsd.c              | 5 +----
 telnet/telnet.c               | 5 +----
 telnet/terminal.c             | 5 +----
 telnet/tn3270.c               | 5 +----
 telnet/types.h                | 5 +----
 telnet/utilities.c            | 5 +----
 telnetd/Makefile.am           | 4 +---
 telnetd/pty.c                 | 4 +---
 telnetd/slc.c                 | 5 +----
 telnetd/state.c               | 5 +----
 telnetd/telnetd.c             | 5 +----
 telnetd/telnetd.h             | 4 +---
 telnetd/term.c                | 4 +---
 telnetd/termstat.c            | 5 +----
 telnetd/utility.c             | 5 +----
 tests/Makefile.am             | 3 +--
 tests/addrpeek.c              | 3 +--
 tests/dnsdomainname.sh        | 3 +--
 tests/ftp-localhost.sh        | 3 +--
 tests/ftp-parser.sh           | 3 +--
 tests/hostname.sh             | 3 +--
 tests/identify.c              | 3 +--
 tests/ifconfig.sh             | 3 +--
 tests/ifconfig_modes.sh       | 3 +--
 tests/inetd.sh                | 3 +--
 tests/libls.sh                | 3 +--
 tests/localhost.c             | 3 +--
 tests/ls.c                    | 3 +--
 tests/ping-localhost.sh       | 3 +--
 tests/readutmp.c              | 3 +--
 tests/runtime-ipv6.c          | 2 +-
 tests/syslogd.sh              | 3 +--
 tests/tcpget.c                | 3 +--
 tests/telnet-localhost.sh     | 3 +--
 tests/test-snprintf.c         | 2 +-
 tests/tftp.sh                 | 3 +--
 tests/tools.sh.in             | 3 +--
 tests/traceroute-localhost.sh | 3 +--
 tests/utmp.sh                 | 3 +--
 tests/waitdaemon.c            | 3 +--
 whois/Makefile.am             | 4 +---
 whois/as_del_list             | 4 +---
 whois/data.h                  | 3 +--
 whois/ip6_del_list            | 2 +-
 whois/ip_del_list             | 4 +---
 whois/make_as_del.pl          | 4 +---
 whois/make_ip6_del.pl         | 2 +-
 whois/make_ip_del.pl          | 4 +---
 whois/make_tld_serv.pl        | 4 +---
 whois/tld_serv_list           | 4 +---
 whois/whois.c                 | 4 +---
 whois/whois.h                 | 4 +---
 242 files changed, 251 insertions(+), 740 deletions(-)


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