show / manipulate the IP routing table
~]# route -h -n, --numeric don't resolve names
route route -n
route add -net 192.168.10.0 netmask 255.255.255.0 gw 10.80.0.1 route add -host 192.168.0.100 gw 192.168.1.100 route add default gw 192.168.0.1
route del -net 192.168.10.0 netmask 255.255.255.0 route del -host 192.168.0.100 route del default route del -host 192.168.0.100 gw 192.168.0.1 route del default gw 192.168.0.1