group(4)                                                 group(4)



     NAME
          group - group file

     SYNOPSIS
          /etc/group

     DESCRIPTION
          group contains for each group the following information:

          ⊕ group name

          ⊕ encrypted password

          ⊕ numerical group ID

          ⊕ a comma separated list of all users allowed in the group

          This is an ASCII file.  The fields are separated by colons;
          each group is separated from the next by a newline.  If the
          password field is null, no password is demanded.

          This file resides in the /etc directory.  Because of the en-
          crypted passwords, it can and does have general read permis-
          sion and can be used, for example, to map numerical group
          ID's to names.

          A group file can have a line beginning with a plus (+),
          which means to incorporate entries from the yellow pages.
          There are two styles of + entries:  All by itself, + means
          to insert the entire contents of the yellow pages group file
          at that point; +name means to insert the entry (if any) for
          name from the yellow pages at that point.  If a + entry has
          a nonnull password or group member field, the contents of
          that field will overide what is contained in the yellow
          pages.  The numerical group ID field cannot be overridden.

     EXAMPLES
             +myproject:::carolyn, jennifer
             +:


          If these entries appear at the end of a group file, then the
          group myproject will have members carolyn and jennifer, and
          the password and group ID of the yellow pages entry for the
          group myproject.  All the groups listed in the yellow pages
          will be pulled in and placed after the entry for myproject.

     FILES
          /etc/group
          /etc/yp/group





     April, 1990                                                     1

     group(4)                                                 group(4)



     SEE ALSO
          passwd(1), setgroups(2), crypt(3), initgroups(3), passwd(4).

     BUGS
          The passwd(1) command won't change group passwords.


















































     2                                                     April, 1990