osf1 man page for groups

groups(1)						      General Commands Manual							 groups(1)

NAME
       groups - Displays your group membership

SYNOPSIS
       groups [user]

DESCRIPTION
       The  groups command writes to standard output the groups to which you or the specified user belong.  The Tru64 UNIX operating system allows
       a user to belong to many different groups at the same time.

       Your primary group is specified in the /etc/passwd file. Once you are logged in, you can change your active group  with	the  newgrp  shell
       command (see sh). When you create a file, its group ID is that of your active group.

       Other groups that you belong to are specified in the /etc/group file.  If you belong to more than one group, you can access files belonging
       to any of those groups without changing your primary group ID.  These are called your concurrent groups.

NOTES
       The /etc/passwd and /etc/group files must be on the same node.

EXAMPLES
       To determine your group membership, enter: groups

       The groups to which you belong will be displayed.  For example: devel  prod

FILES
       Contains group information.  Contains user information.

SEE ALSO
       Commands:  csh(1), ksh(1), sh(1)

       Functions:  initgroups(3), setgroups(2)

																	 groups(1)