CHGRP(1) CHGRP(1) chgrp -- - chgrp []... ... chgrp []... --reference= ... . --reference . -c, --changes verbose, -f, --silent, --quiet -v, --verbose --dereference , ( ) -h, --no-dereference , , ( , ) --from=_:_ , / . , . --no-preserve-root <> ( ) --preserve-root <> --reference= use RFILE's ownership rather than specifying values. RFILE is always dereferenced if a symbolic link. -R, --recursive 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. -P is the default. -H , -L -P --help --version chgrp staff /u /u <>. chgrp -hR staff /u /u <>. (David MacKenzie) (Jim Meyering). - GNU coreutils: Copyright (C) 2025 Free Software Foundation, Inc. GPLv3+: GNU GPL 3 . : . , . chown(1), chown(2) , info '(coreutils) chgrp invocation' () Kirill Rekhov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () <>. GNU coreutils 9.7 2025 . CHGRP(1)