osx man page for groups

GROUPS(1)						    BSD General Commands Manual 						 GROUPS(1)

NAME
     groups -- show group memberships

SYNOPSIS
     groups [user]

DESCRIPTION
     The groups utility has been obsoleted by the id(1) utility, and is equivalent to ``id -Gn [user]''.  The command ``id -p'' is suggested for
     normal interactive use.

     The groups utility displays the groups to which you (or the optionally specified user) belong.

EXIT STATUS
     The groups utility exits 0 on success, and >0 if an error occurs.

SEE ALSO
     id(1)

BSD
								   June 6, 1993 							       BSD