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Linux 2.6 - man page for gshadow (linux section 5)

GSHADOW(5)			   File Formats and Conversions 		       GSHADOW(5)

NAME
       gshadow - shadowed group file

DESCRIPTION
       /etc/gshadow contains the shadowed information for group accounts.

       This file must not be readable by regular users if password security is to be maintained.

       Each line of this file contains the following colon-separated fields:

       group name
	   It must be a valid group name, which exist on the system.

       encrypted password
	   Refer to crypt(3) for details on how this string is interpreted.

	   If the password field contains some string that is not a valid result of crypt(3), for
	   instance ! or *, users will not be able to use a unix password to access the group
	   (but group members do not need the password).

	   The password is used when an user who is not a member of the group wants to gain the
	   permissions of this group (see newgrp(1)).

	   This field may be empty, in which case only the group members can gain the group
	   permissions.

	   A password field which starts with a exclamation mark means that the password is
	   locked. The remaining characters on the line represent the password field before the
	   password was locked.

	   This password supersedes any password specified in /etc/group.

       administrators
	   It must be a comma-separated list of user names.

	   Administrators can change the password or the members of the group.

	   Administrators also have the same permissions as the members (see below).

       members
	   It must be a comma-separated list of user names.

	   Members can access the group without being prompted for a password.

	   You should use the same list of users as in /etc/group.

FILES
       /etc/group
	   Group account information.

       /etc/gshadow
	   Secure group account information.

SEE ALSO
       gpasswd(5), group(5), grpck(8), grpconv(8), newgrp(1).

File Formats and Conversions		    06/24/2011				       GSHADOW(5)


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