tcgetattr: Invalid argument

[Fratkin, Allyn]

Perhaps the error is specific to Red Hat?  I reproduced it with remote hosts 
running RHEL 5.2, 5.8, 6.3.  The local host is RHEL 5.8.

ANY invocation of stty, even without arguments, provokes the "tcgetattr: 
Invalid argument" error message.

[afratkin@vl001 src]$ echo hello | ssh -tt -oLogLevel=quiet g4t0930c stty | cat 
# RHEL 5.2
tcgetattr: Invalid argument
speed 0 baud; line = 0;
intr = <undef>; quit = <undef>; erase = <undef>; kill = <undef>; eof = <undef>;
start = <undef>; stop = <undef>; susp = <undef>; rprnt = <undef>;
werase = <undef>; lnext = <undef>; flush = <undef>; min = 1; time = 0;
-brkint -icrnl -imaxbel
-opost -onlcr
-isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
[afratkin@vl001 src]$ echo hello | ssh -tt -oLogLevel=quiet g4t0439 stty | cat  
# RHEL 5.8
tcgetattr: Invalid argument
speed 0 baud; line = 0;
intr = <undef>; quit = <undef>; erase = <undef>; kill = <undef>; eof = <undef>;
start = <undef>; stop = <undef>; susp = <undef>; rprnt = <undef>;
werase = <undef>; lnext = <undef>; flush = <undef>; min = 1; time = 0;
-brkint -icrnl -imaxbel
-opost -onlcr
-isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
[afratkin@vl001 src]$ echo hello | ssh -tt -oLogLevel=quiet v001 stty | cat     
# RHEL 6.3
tcgetattr: Invalid argument
speed 0 baud; line = 0;
intr = M-^?; quit = M-^?; erase = M-^?; kill = M-^?; eof = M-^?; eol = M-^?;
eol2 = M-^?; start = M-^?; stop = M-^?; susp = M-^?; rprnt = M-^?; werase = 
M-^?;
lnext = M-^?; flush = M-^?; min = 1; time = 0;
-brkint -icrnl -imaxbel
-opost -onlcr
-isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
[afratkin@vl001 src]$

RHEL 5.2, 5.8:
stty (GNU coreutils) 5.97
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.

Written by David MacKenzie.

RHEL 6.3:
stty (GNU coreutils) 8.4
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by David MacKenzie.

Local host's ssh version (RHEL 5.8):
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

-- 
Allyn Fratkin                    allyn@hp.com
Hewlett-Packard Company          http://www.fratkin.com/


-----Original Message-----
From: ole.tange@gmail.com [mailto:ole.tange@gmail.com] On Behalf Of Ole Tange
Sent: Tuesday, May 07, 2013 11:10 PM
To: Fratkin, Allyn
Cc: parallel@gnu.org
Subject: Re: Poor job distribution?

On Tue, May 7, 2013 at 9:55 PM, Fratkin, Allyn <allyn@hp.com> wrote:

> Fantastic!  Works great now.  Thank you for the quick turnaround.  Now I get 
> a job distribution of 2, 1, 2, 1, 2, 2, 1.  Perfect.

If it does not break anything this may be the default in the future.

> Only problem is now I get an error message "tcgetattr: Invalid argument" from 
> each job, appears to result from "$remote_pre .= ::shell_quote_scalar('stty 
> isig -onlcr -echo;');" on line 3810.  Did you mean "and" rather than "or" on 
> line 3798?

No: --ctrlc is now default unless you use --pipe.

I have not seen the error you get before, so I would like to be able
to reproduce that error. My guess is that it is due to your version of
stty or terminal. Can you post the output from the commands on the
remote system:

  stty --version
  stty -onlcr
  stty isig
  stty -echo
  echo $TERM
  uname -a

If you can reproduce it on one of the virtualbox-images from
http://sourceforge.net/projects/virtualboximage/files/ it will be even
better.

For --ctrlc to work I need:

  -onlcr - make output 8-bit clean - otherwise binary output will not work.
  isig - pass CTRL-C as signal
  -echo - do not print input back


/Ole