GROUP(5) Linux Programmer's Manual GROUP(5)NAMEgroup - user group file
/etc/group is a text file which defines the groups on the system.
There is one entry per line, with the following format:
The field descriptions are:
the name of the group.
the (encrypted) group password. If this field is empty, no
password is needed.
GID the numerical group ID.
a list of the usernames that are members of this group, sepa‐
rated by commas.
As the 4.2BSD initgroups(3) man page says: No-one seems to keep
SEE ALSOlogin(1), newgrp(1), getgrent(3), getgrnam(3), passwd(5)COLOPHON
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Linux 2009-02-23 GROUP(5)