group(4)                                                           group(4)

NAME
     group - group file

DESCRIPTION
     The file /etc/group contains for each group the following information:

     -  group name

     -  encrypted password

     -  numerical group ID

     -  comma-separated list of all users allowed in the group

     group is an ASCII file. The fields are separated by colons; each group
     is separated from the next by a new line.

     Because of the encrypted passwords, the group file can and does have
     general read permission and can be used, for example, to map numerical
     group IDs to names.

     During user identification and authentication, the supplementary group
     access list is initialized sequentially from information in this file.
     If a user is in more groups than the system is configured for [see
     NGROUPSMAX in limits(4)], a warning will be given and subsequent
     group specifications will be ignored.

SEE ALSO
     groups(1), newgrp(1), passwd(1), setgroups(2), initgroups(3C),
     limits(4), unistd(4).

























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