#!/bin/rc 

switch($#*){
case 2
	/bin/chgrp $1 `{/bin/du -a $2 | /bin/awk '{print $2}'}
case 3
	/bin/chgrp $1 $2 `{/bin/du -a $3 | /bin/awk '{print $2}'}
case *
        /bin/echo 'usage: chgrpr [-u] group dir'
}