chgrp

Change group ownership of files and directories.

Change the owner group of a file/directory:

chgrp {{group}} {{path/to/file_or_directory}}

Recursively change the owner group of a directory and its contents:

chgrp -R {{group}} {{path/to/directory}}

Change the owner group of a symbolic link:

chgrp -h {{group}} {{path/to/symlink}}

Change the owner group of a file/directory to match a reference file:

chgrp --reference={{path/to/reference_file}} {{path/to/file_or_directory}}