solaris - groups (1)

     groups - print group membership of user

     groups [ user...  ]

     SUNWcsu

     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  possi-
     bly  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.

     The output takes the following form:

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

     /etc/passwd
     /etc/group

     group(4), passwd(4)