CHGRP(1) CHGRP(1) chgrp - change group ownership chgrp []... [ ]... chgrp []... [--reference= ... . --reference, . -c, --changes -f, --silent, --quiet -v, --verbose --dereference ( ), -h, --no-dereference ( ) --from=CURRENT_OWNER:CURRENT_GROUP change the ownership of each file only if its current owner and/or group match those specified here. Either may be omitted, in which case a match is not required for the omitted attribute --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" ,,staff". chgrp -hR staff /u ,,/u" ,,staff". . : bug-coreutils@gnu.org coreutils : : Copyright (C) 2026 Free Software Foundation, Inc. 3+: 3 . : . , . chown(1), chown(2) ,,info '(coreutils) chgrp invocation'" ; 3 . . , - TODO <>. coreutils 9.11 2026 CHGRP(1)