chgrp

chgrp [options] newgroup files

Change the ownership of one or more files to newgroup. newgroup is either a group ID number or a group name located in /etc/group. You must own the file or be a privileged user to succeed with this command.

Options

-f

Force error messages to be suppressed.

-h

Change the group on symbolic links. Normally, chgrp acts on the file referenced by a symbolic link, not on the link itself. (This option is not necessarily available on all Unix systems.)

-R

Recursively descend through the directory, including subdirectories and symbolic links, setting the specified group ID as it proceeds.