Getting Lazy Online Help
TAB character will complete a partial word
hostel-rtr(config)#int<TAB>
hostel-rtr(config)#interface et<TAB>
hostel-rtr(config)#interface ethernet 0
hostel-rtr(config-if)#ip add<TAB>
hostel-rtr(config-if)#ip address n.n.n.n m.m.m.m
Not really necessary; partial commands can be used:
router#conf t
router(config)#int e0/0
router(config-if)#ip addr n.n.n.n