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group(5) [bsd man page]

GROUP(5)							File Formats Manual							  GROUP(5)

NAME
group - group file 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 new-line. If the password field is null, no password is demanded. This file resides in directory /etc. 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. FILES
/etc/group SEE ALSO
setgroups(2), initgroups(3X), crypt(3), passwd(1), passwd(5) BUGS
The passwd(1) command won't change the passwords. 7th Edition May 15, 1985 GROUP(5)

Check Out this Related Man Page

GROUP(5)						     Linux Programmer's Manual							  GROUP(5)

NAME
group - user group file DESCRIPTION
/etc/group is a text file which defines the groups on the system. There is one entry per line, with the following format: group_name:password:GID:user_list The field descriptions are: group_name the name of the group. password the (encrypted) group password. If this field is empty, no password is needed. GID the numerical group ID. user_list a list of the usernames that are members of this group, separated by commas. FILES
/etc/group BUGS
As the 4.2BSD initgroups(3) man page says: No-one seems to keep /etc/group up-to-date. SEE ALSO
login(1), newgrp(1), getgrent(3), getgrnam(3), passwd(5) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2009-10-17 GROUP(5)
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