Synopsis

getgrgid gid
                  

Retrieves a group file (/etc/group) entry by group number gid. The return value in list context is:

($name, $passwd, $gid, $members)

in which $members contains a space-separated list of the login names of the members of the group. If you want to do this repeatedly, consider caching the data in a hash using getgrent. In scalar context, getgrgid returns only the group name.