Changes group ownership of a file or files.
Change the group of each FILE to GROUP. With --reference, change the group of each FILE to that of RFILE.
chgrp [OPTION]... GROUP FILE... chgrp [OPTION]... --reference=RFILE FILE...
|-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 referenced file of each symbolic link, rather than the symbolic link itself, which is default setting.|
|-h, --no-dereference||Affect symbolic links instead of any referenced file. This option is useful only on systems that can change the ownership of a symlink.|
|--no-preserve-root||Do not treat '/' in any special way. This option is the default.|
|--preserve-root||Do not operate recursively on '/'.|
|--reference=RFILE||Use RFILE's group rather than specifying a GROUP value.|
|-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 of these options 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.|
|-P||Do not traverse any symbolic links. This option is the default.|
|--help||Display a help message and exit.|
|--version||Output version information and exit.|
chgrp hope file.txt
Change the owning group of the file file.txt to the group named hope.
chgrp -hR staff /office/files
Change the owning group of /office/files, and all subdirectories, to the group staff.