chgrp(1) on Linux
The text afb552529aea, as Debian 3.1 (Sarge) shipped it.
change group ownership
Flags it lists
-
--changes -
--dereference -
--help -
--no-dereference -
--preserve-root -
--quiet -
--recursive -
--reference -
--silent -
--verbose -
--version -
-H -
-L -
-P -
-R -
-c -
-f -
-h -
-v