Zutils

The supported compressors are gzip, lzip, bzip2 and xz.

The currently provided utilities are:

Zcat - Decompresses and copies files to standard output.
Zcmp - Decompresses and compares files with Cmp.
Zdiff - Decompresses and compares files with Diff.
Zgrep - Decompresses and searches inside files with Grep.
Ztest - Tests integrity of compressed files.

What is new in this release:

• The new utility zupdate, which recompresses bzip2, gzip, and xz files to lzip format, has been added.

What is new in version 1.1:

• The new options "--bz2", "--gz", "--lz" and "--xz" have been added to all utilities.
• Zutils now provides the runtime configuration file "zutilsrc", which allows the user change the compressor to be used for each format.
• The checking of the exit status of compressors has been improved.
• The use of "decompressed" and "uncompressed" in the documentation has been revised.

What is new in version 1.1 RC2:

• The new options "--bz2", "--gz", "--lz" and "--xz" have been added to all utilities.
• Zutils now provides the runtime configuration file "zutilsrc", which allows the user change the compressor to be used for each format.
• The checking of the exit status of compressors has been improved.
• The use of "decompressed" and "uncompressed" in the documentation has been revised.

What is new in version 1.0:

• A new "--format" option has been added to all utilities.
• Zgrep no longer prefixes the file name to the output by default when searching one file and "--recursive" has not been selected.
• The output of "zgrep -L" has been fixed (it behaved like "zgrep -l").
• A deadlock in zcmp, which happens when the "-n" option was used, has been fixed.
• Decompressors are now invoked without the "-q" option except when explicitly requested.
• Quote characters in messages have been changed as advised by GNU Coding Standards.
• "configure" now accepts options with a separate argument.

What is new in version 1.0 RC6:

• Decompressors are now invoked without the "-q" option unless explicitly requested, as some simplified implementations do not accept it.

What is new in version 1.0 RC5:

• Zgrep now shows file names by default when "--recursive" is selected.
• A deadlock in zcmp, which happens when the "-n" option was used, has been fixed.

What is new in version 1.0 RC4:

• Zgrep no longer prefixes the file name to the output by default when searching one file.
• A portability issue with Solaris 9 has been (hopefully) fixed.

What is new in version 1.0 RC3:

• This version adds minor fixes.
• The new option "--format", which forces the use of a given compression format, has been added to all utilities.
• The target "install-bin" has been added to the Makefile.

What is new in version 0.9:

• Configure now allows the selection of diff and grep programs to use.
• A deadlock in zcmp, which happened when files differed, has been fixed.
• A deadlock in zgrep, which happened when a binary file matched, has been fixed.