gshadow 5 gshadow shadowed group file gshadow contains the shadowed information for group accounts. It contains lines with the folowing colon-separated fields: Group name Encrypted password Comma-separated list of group administrators Comma-separated list of group members. The group name and password fields must be filled. The encryped password consists of 13 characters from the 64-character alphabet a thru z, A thru Z, 0 thru 9, \. and /. Refer to crypt3 for details on how this string is interpreted. If the password field contains some string that is not valid result of crypt3 , for instance ! or *, the user will not be able to use a unix password to log in, subject to pam7 . This information supercedes any password present in /etc/group. This file must not be readable by regular users if password security is to be maintained. /etc/group group account information /etc/gshadow secure group account information group5 , gpasswd5 , newgrp5 Nicolas FRANCOIS