ip/routef lifesaver

keep people from screwing their systems with routef

minor patch here ... if you run `routef --help`,
it'll turn around and flush your routing tables anyways :)

so patch will have routef output usage if any arguments are given, 
otherwise it'll flush the tables ... idea is from Lars Strojny

ip/routef

 #! /bin/sh
 
-exec ip -4 ro flush  scope global  type unicast
+if [ -z "$*" ] ; then
+	exec ip -4 ro flush  scope global  type unicast
+else
+	echo "Usage: routef"
+	echo
+	echo "This script will flush the IPv4 routing table"
+fi