cdiff --version (return code: 0)
gzip 1.6[0;0m
Copyright (C) 2007, 2010, 2011 Free Software Foundation, Inc.[0;0m
Copyright (C) 1993 Jean-loup Gailly.[0;0m
This is free software. You may redistribute copies of it under the terms of[0;0m
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.[0;0m
There is NO WARRANTY, to the extent permitted by law.[0;0m
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Written by Jean-loup Gailly.[0;0m
cdiff --help (return code: 0)
Usage: gzip [OPTION]... [FILE]...[0;0m
Compress or uncompress FILEs (by default, compress FILES in-place).[0;0m
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Mandatory arguments to long options are mandatory for short options too.[0;0m
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-c, --stdout write on standard output, keep original files unchanged[0;0m
-d, --decompress decompress[0;0m
-f, --force force overwrite of output file and compress links[0;0m
-h, --help give this help[0;0m
-k, --keep keep (don't delete) input files[0;0m
-l, --list list compressed file contents[0;0m
-L, --license display software license[0;0m
-n, --no-name do not save or restore the original name and time stamp[0;0m
-N, --name save or restore the original name and time stamp[0;0m
-q, --quiet suppress all warnings[0;0m
-r, --recursive operate recursively on directories[0;0m
-S, --suffix=SUF use suffix SUF on compressed files[0;0m
-t, --test test compressed file integrity[0;0m
-v, --verbose verbose mode[0;0m
-V, --version display version number[0;0m
-1, --fast compress faster[0;0m
-9, --best compress better[0;0m
--rsyncable Make rsync-friendly archive[0;0m
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With no FILE, or when FILE is -, read standard input.[0;0m
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Report bugs to <bug-gzip@gnu.org>.[0;0m