GZIP, UTILITIES, GNU Zip - compress and decompression
!
This is the GNU Zip application.  It takes a file of
the form FOO.BAR-GZ and converts it into FOO.BAR or
converts a FOO.BAR file into FOO.BAR-GZ.  Note that
you give the filename without the "-GZ" suffix, and
GZIP will add or remove it - depending on if you are
compressing or decompressing.

GNU Zip is written by the Free Software Foundation,
more information as well as all of the sources are
available in the ZIP file (use UNZIP to unzip).