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 ID's 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, {NGROUPS_MAX}, a warning will be given and subsequent group
specifications will be ignored.
SEE ALSO
groups(1), passwd(1) in the User's Reference Manual
newgrp(1M), setgroups(2), initgroups(3C), unistd(4)
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