CHGRP

chgrp − change group ownership

chgrp [OPTION]... GROUP FILE...
chgrp [OPTION]... --reference=RFILE FILE...

Change the group of each FILE to GROUP. With −−reference, change the group of each FILE to that of RFILE.

−c, −−changes

like verbose but report only when a change is made

−−dereference

affect the referent of each symbolic link (this is the default), rather than the symbolic link itself

−h, −−no−dereference

affect each symbolic link instead of any referenced file (useful only on systems that can change the ownership of a symlink)

−−no−preserve−root

do not treat ‘/’ specially (the default)

−−preserve−root

fail to operate recursively on ‘/’

−f, −−silent, −−quiet

suppress most error messages

−−reference=RFILE

use RFILE’s group rather than specifying a GROUP value

−R, −−recursive

operate on files and directories recursively

−v, −−verbose

output a diagnostic for every file processed

The following options modify how a hierarchy is traversed when the −R option is also specified. If more than one is specified, only the final one takes effect.

−H

if a command line argument is a symbolic link to a directory, traverse it

−L

traverse every symbolic link to a directory encountered

−P

do not traverse any symbolic links (default)

−−help

display this help and exit

−−version

output version information and exit

chgrp staff /u

Change the group of /u to "staff".

chgrp −hR staff /u

Change the group of /u and subfiles to "staff".

Written by David MacKenzie and Jim Meyering.

Report chgrp bugs to bug−coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report chgrp translation bugs to <http://translationproject.org/team/>

Copyright © 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

The full documentation for chgrp is maintained as a Texinfo manual. If the info and chgrp programs are properly installed at your site, the command

info coreutils 'chgrp invocation'

should give you access to the complete manual.