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OpenSolaris 2009.06 - man page for groups (opensolaris section 1)

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)