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groups(1)							     groups(1)

NAME
       groups - show group memberships

SYNOPSIS
       [user]

DESCRIPTION
       shows  the  groups to which the caller or the optionally specified user
       belong.	If invoked with no arguments, prints the current  access  list
       returned by (see getgroups(2)).

       Each  user belongs to a group specified in the password file and possi‐
       bly to other groups as specified in the files and A user is granted the
       permissions  of	those groups specified in and at login time.  The per‐
       missions of the groups specified in are normally	 available  only  with
       the  use	 of  (see  newgrp(1)).	 If  a	user name is specified with no
       options, prints the union of all these groups.

       The and options limit the printed list to those groups specified in and
       respectively.   If  a  user  name  is  not  specified with any of these
       options,	 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
       determines the order in which the output is sorted.

       If is not specified in the environment or is set to the	empty  string,
       the  value  of  is used as a default.  If is not specified or is set to
       the empty string, a default of ``C'' (see lang(5)) is used  instead  of
       If  any	internationalization  variable	contains  an  invalid setting,
       behaves as if all internationalization variables are set to ``C''  (see
       environ(5)).

EXAMPLES
       Check file and display all groups to which user belongs:

AUTHOR
       was developed by the University of California, Berkeley.

FILES
SEE ALSO
       id(1), newgrp(1), getgroups(2), initgroups(3C), cuserid(3S), group(4).

								     groups(1)

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