CHGRP(1) | General Commands Manual | CHGRP(1) |
chgrp
— change
group
chgrp |
[-R [-H |
-L | -P ]]
[-dfhv ] group
file ... |
chgrp |
[-R [-H |
-L | -P ]]
[-dfhv ] --reference=rfile
file ... |
The chgrp
utility sets the group ID of the
file named by each file operand to the
group ID specified by the group operand, or to the
group of the given rfile, specified by the
--reference
argument.
Options:
-H
-R
option is specified, symbolic links on
the command line are followed. (Symbolic links encountered in the tree
traversal are not followed.)-L
-R
option is specified, all symbolic links
are followed.-P
-R
option is specified, no symbolic links
are followed.-R
-d
-f
-h
-v
chgrp
to be verbose, showing files as they
are processed.If -h
is not given, unless the
-H
or -L
option is set,
chgrp
on a symbolic link always succeeds and has no
effect. The -H
, -L
and
-P
options are ignored unless the
-R
option is specified. In addition, these options
override each other and the command's actions are determined by the last one
specified. The default is as if the -P
option had
been specified.
The group operand can be either a group name from the group database, or a numeric group ID. Since it is valid to have a group name that is numeric (and doesn't have the numeric ID that matches its name) the name lookup is always done first. Preceding the ID with a ``#'' character will force it to be taken as a number.
The user invoking chgrp
must belong to the
specified group and be the owner of the file, or be the super-user.
Unless invoked by the super-user, chgrp
clears the set-user-id and set-group-id bits on a file to prevent accidental
or mischievous creation of set-user-id or set-group-id programs.
The chgrp
utility exits 0 on
success, and >0 if an error occurs.
chown(2), lchown(2), fts(3), group(5), passwd(5), symlink(7), chown(8)
The chgrp
utility is expected to be POSIX
1003.2 compatible.
The -v
and -d
options and the use of ``#'' to force a numeric group ID are extensions to
IEEE Std 1003.2 (“POSIX.2”).
May 19, 2023 | NetBSD 10.99 |