znew --version (return code: 0)
znew (gzip) 1.6
Copyright (C) 2010-2013 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 Jean-loup Gailly.
znew --help (return code: 0)
Usage: /bin/znew [OPTION]... [FILE]...
Recompress files from .Z (compress) format to .gz (gzip) format.
Options:
-f Force recompression even if a .gz file already exists.
-t Test the new files before deleting originals.
-v Verbose; display name and statistics for each file compressed.
-9 Use the slowest compression method (optimal compression).
-P Use pipes for the conversion to reduce disk space usage.
-K Keep a .Z file when it is smaller than the .gz file; implies -t.
--help display this help and exit
--version output version information and exit
Report bugs to <bug-gzip@gnu.org>.