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[Zutils-bug] Zutils 1.9 released

From: Antonio Diaz Diaz
Subject: [Zutils-bug] Zutils 1.9 released
Date: Thu, 02 Jul 2020 16:59:04 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv: Gecko/20110420 SeaMonkey/2.0.14

I am pleased to announce the release of zutils 1.9.

Zutils is a collection of utilities able to process any combination of compressed and uncompressed files transparently. If any file given, including standard input, is compressed, its decompressed content is used. Compressed files are decompressed on the fly; no temporary files are created.

These utilities are not wrapper scripts but safer and more efficient C++ programs. In particular the option '--recursive' is very efficient in those utilities supporting it.

The utilities provided are zcat, zcmp, zdiff, zgrep, ztest, and zupdate.
The formats supported are bzip2, gzip, lzip, and xz.
Zutils uses external compressors. The compressor to be used for each format is configurable at runtime.

zcat, zcmp, zdiff, and zgrep are improved replacements for the shell scripts provided by GNU gzip. ztest is unique to zutils. zupdate is similar to gzip's znew.

The homepage is at http://www.nongnu.org/zutils/zutils.html

The sources can be downloaded from http://download.savannah.gnu.org/releases/zutils/

The sha256sum is:
59d83cb129788528d311a0bb686e40986c6941b1ad90edc20a91878c39aa5c78 zutils-1.9.tar.lz

This release is also GPG signed. You can download the signature by appending '.sig' to the URL. If the 'gpg --verify' command fails because you don't have the required public key, then run this command to import it:

  gpg --keyserver keys.gnupg.net --recv-keys 8FE99503132D7742

Key fingerprint = 1D41 C14B 272A 2219 A739  FA4F 8FE9 9503 132D 7742

Changes in version 1.9:

* zcmp anf zdiff now meet the POSIX requirement for cmp and diff that the standard input shall be used only if the file1 or file2 operand refers to standard input.

* zdiff now passes the options '-W' and '-y' to diff. (But it only works if the diff program used supports them).

  * Bzip2 and lzip files are now detected better.
('echo LZIP | zcat' and 'echo BZh5 | zcat' no longer return an error).

* ztest now continues checking the rest of the files if any input file is a terminal.

* 'ztest -v' now prints the number of files that failed the test (as lzip does).

* zcat, zgrep, and ztest now check for errors when closing the input file in addition to checking when closing the input from the decompressor.

* Trailing data remaining in the data feeder to the decompressor are now correctly ignored.

* zupdate has been modified to support the new behavior of lzip 1.22's option '-o' while retaining:
perfect backwards compatibility with older versions of lzip down to 1.20,
good backwards compatibility with older versions of lzip down to 1.11,
acceptable backwards compatibility with older versions of lzip down to 1.4.

* zupdate now keeps combined extensions: tgz, tbz, tbz2, txz --> tlz. This is useful when recompressing Slackware packages, for example.

* zupdate now puts single quotes around file names when calling zcmp to allow file names with spaces. (But putting spaces in file names is a bad idea).

  * The descriptions of zcat, zcmp, and zdiff have been improved.

Please send bug reports and suggestions to zutils-bug@nongnu.org

Antonio Diaz, zutils author and maintainer.
Self-determination is a human right. Free Catalan political prisoners.
If you care about interoperability and long-term archiving, please help me replace xz with lzip. See http://www.nongnu.org/lzip/lzip_benchmark.html#xz1
http://www.nongnu.org/lzip/manual/lzip_manual.html#Quality-assurance and
http://www.nongnu.org/lzip/xz_inadequate.html Thanks.

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