groups
GROUPS(1)                             FSF                            GROUPS(1)
NAME
       groups - print the groups a user is in
SYNOPSIS
       groups [OPTION]... [USERNAME]...
DESCRIPTION
       --help display this help and exit
       --version
              output version information and exit
       Same as id -Gn.  If no USERNAME, use current process.
REPORTING BUGS
       Report bugs to <bug-coreutils@gnu.org>.
SEE ALSO
       The  full  documentation  for groups is maintained as a Texinfo manual.
       If the info and groups programs are properly installed  at  your  site,
       the command
              info groups
       should give you access to the complete manual.
GNU coreutils 4.5.3              October 2003                        GROUPS(1)