groups.1 (2010 09)

g
groups(1) groups(1)
NAME
groups - show group memberships
SYNOPSIS
groups [-p][-g][
-l][user ]
DESCRIPTION
groups shows the groups to which the caller or the optionally specified user belong. If invoked with no
arguments,
groups prints the current access list returned by
getgroups() (see getgroups (2)).
Each user belongs to a group specified in the password file
/etc/passwd and possibly to other groups
as specified in the files
/etc/group and /etc/logingroup
. A user is granted the permissions of
those groups specified in
/etc/passwd and
/etc/logingroup at login time. The permissions of
the groups specified in
/etc/group are normally available only with the use of
newgrp (see
newgrp(1)). If a user name is specified with no options,
groups prints the union of all these groups.
The
-p, -g, and -l options limit the printed list to those groups specified in
/etc/passwd,
/etc/group, and /etc/logingroup
, respectively. If a user name is not specified with any of these
options,
cuserid() is called to determine the default user name (see cuserid (3S)).
The printed list of groups is sorted in ascending collation order (see Environment Variables below).
EXTERNAL INFLUENCES
Environment Variables
LC_COLLATE determines the order in which the output is sorted.
If
LC_COLLATE is not specified in the environment or is set to the empty string, the value of
LANG is
used as a default. If
LANG is not specified or is set to the empty string, a default of ‘‘C’’ (see lang (5)) is
used instead of
LANG. If any internationalization variable contains an invalid setting,
groups behaves
as if all internationalization variables are set to ‘‘C’’ (see environ (5)).
EXAMPLES
Check file
/etc/logingroup
and display all groups to which user tim belongs:
groups -l tim
AUTHOR
groups was developed by the University of California, Berkeley.
FILES
/etc/group
/etc/logingroup
/etc/passwd
SEE ALSO
id(1), newgrp(1), getgroups(2), initgroups(3C), cuserid(3S), group(4).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1