Gzip  reduces the size of the named files using Lempel-Ziv
     coding (LZ77).  Whenever possible, each file  is  replaced
     by one with the extension .gz, while keeping the same own-
     ership modes, access and modification times.  (The default
     extension  is  -gz for VMS, z for MSDOS, OS/2 FAT, Windows
     NT FAT and Atari.)  If no files are  specified,  or  if  a
     file  name is "-", the standard input is compressed to the
     standard output.  Gzip will only attempt to compress regu-
     lar  files.  In particular, it will ignore symbolic links.

     If the compressed file name is too long for its file  sys-
     tem,  gzip  truncates  it.  Gzip attempts to truncate only
     the parts of the file name longer than 3  characters.   (A
     part  is delimited by dots.) If the name consists of small
     parts only, the longest parts are truncated. For  example,
     if file names are limited to 14 characters, gzip.msdos.exe
     is compressed to gzi.msd.exe.gz.