chgrp - change group ownership

       Written by David MacKenzie and Jim Meyering.

       Copyright  ©  2024  Free  Software  Foundation,  Inc.   License  GPLv3+:  GNU  GPL  version  3  or  later
       <https://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.

       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

       -f, --silent, --quiet
              suppress most error messages

       -v, --verbose
              output a diagnostic for every file processed

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

       -h, --no-dereference
              affect  symbolic  links instead of any referenced file (useful only on systems that can change the
              ownership of a symlink)

       --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
              do not treat '/' specially (the default)

       --preserve-root
              fail to operate recursively on '/'

       --reference=RFILE
              use  RFILE's  ownership  rather  than specifying values RFILE is always dereferenced if a symbolic
              link.

       -R, --recursive
              operate on files and directories recursively

       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     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

       --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".

       chgrp - change group ownership

       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
       Report any translation bugs to <https://translationproject.org/team/>

chown(1), chown(2)

       Full documentation <https://www.gnu.org/software/coreutils/chgrp>
       or available locally via: info '(coreutils) chgrp invocation'

GNU coreutils 9.5                                  April 2025                                           CHGRP(1)

chgrp [OPTION]... GROUPFILE...
       chgrp [OPTION]... --reference=RFILEFILE...