GROUP(5)GROUP(5)NAMEgroup - group file
SYNOPSIS
/etc/group
DESCRIPTION
NOTE: This file is superceded by netinfo(5) if NetInfo is running.
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 the /etc directory. 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.
A group file can have a line beginning with a plus (+), which means to
incorporate entries from the yellow pages. There are two styles of +
entries: All by itself, + means to insert the entire contents of the
yellow pages group file at that point; +name means to insert the entry
(if any) for name from the yellow pages at that point. If a + entry
has a non-null password or group member field, the contents of that
field will overide what is contained in the yellow pages. The
numerical group ID field cannot be overridden.
A group file can also have a line beginning with a minus (-), these
entries are used to disallow group entries. There is only one style of
- entries: An entry that consists of -name means to disallow any
subsequent entry (if any) for name. These entries will be disallowed
regardless of whether the subsequent entry comes from the yellow pages
or the local group file.
EXAMPLE-oldproj
+myproject:::bill, steve
+:
If these entries appear at the end of a group file, then the group
oldproj
will be ignored if it appears after the entry -oldproj. Also, the
group myproject will have members billandsteve, and the password and
group ID of the yellow pages entry for the group myproject. All the
groups listed in the yellow pages will be pulled in and placed after
the entry for myproject.
FILES
/etc/group - if NetInfo is not running /etc/yp/group
SEE ALSOsetgroups(2), initgroups(3), crypt(3), passwd(1), passwd(5), netinfo(5)BUGS
The passwd(1) command won't change group passwords.
1 February 1985 GROUP(5)