ultrix man page for group

group(5yp)																group(5yp)

Name
       group - group file in a Yellow Pages environment

Description
       For each group, the file contains:

       Group name
       Encrypted password
       Numerical group ID
       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 new-line.  If the password field is
       null, no password is needed.

       This file resides in the directory.  Because of the encrypted passwords, it can and does have general read permission 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 password or group member field that is not null, the con-
       tents of that field will override what is contained in the Yellow Pages.  The numerical group ID field cannot be overridden.

Examples
       +myproject:::bill, steve
       +:

       If these entries appear at the end of a group file, then the group myproject will have members bill and steve, 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.

Restrictions
       The command will not change group passwords.

Files
       ULTRIX file system group file

       Yellow Pages group map

See Also
       yppasswd(1yp), setgroups(2), crypt(3), initgroups(3x), passwd(5yp)

																	group(5yp)