|CHGRP(1)||General Commands Manual||CHGRP(1)|
chgrp — change
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
-Roption is specified, symbolic links on the command line are followed. (Symbolic links encountered in the tree traversal are not followed.)
-Roption is specified, all symbolic links are followed.
-Roption is specified, no symbolic links are followed.
chgrpto be verbose, showing files as they are processed.
-h is not given, unless the
-L option is set,
chgrp on a symbolic link always succeeds and has no
-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
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,
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.
chgrp utility exits 0 on success, and
>0 if an error occurs.
chgrp utility is expected to be POSIX
-v option and the use of ``#'' to
force a numeric group ID are extensions to IEEE Std 1003.2
|October 22, 2012||NetBSD-7.0.1|