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.