group.5

UNIX v6源代码 这几乎是最经典的unix版本 unix操作系统设计和莱昂氏unix源代码分析都是用的该版

.th GROUP V 2/10/75
.sh NAME
group \*- group file
.sh DESCRIPTION
.it Group
contains for each group the
following information:
.s3
.lp +10 5
group name
.lp +10 5
encrypted password
.lp +10 5
numerical group ID
.lp +10 5
a comma separated list of all users allowed in the group
.s3
.i0
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.
.s3
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.
.sh FILES
/etc/group
.sh "SEE ALSO"
newgrp (I), login (I), crypt (III), passwd (I)