opensolaris man page for groups

groups(1)							   User Commands							 groups(1)

NAME
       groups - print group membership of user

SYNOPSIS
       groups [user]...

DESCRIPTION
       The  command groups prints on standard output the groups to which you or the optionally specified user belong. Each user belongs to a group
       specified in  /etc/passwd and possibly to other groups as specified in  /etc/group. Note that  /etc/passwd specifies the numerical ID (gid)
       of the group. The groups command converts gid to the group name in the output.

EXAMPLES
       The output takes the following form:

	 example% groups tester01 tester02
	 tester01 : staff
	 tester02 : staff
	 example%

FILES
       /etc/passwd

       /etc/group

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       group(4), passwd(4), attributes(5)

SunOS 5.11							    14 Sep 1992 							 groups(1)