Migrating to a Nexus 7000 NX-OS
I found a great post on Chesapeake Netcraftsmen:
It describes the differences in commands between IOS and NX-OS. It is a really good summary of what to expect when you are migrating your core switches from a regular IOS to the newer Nexus Operating System. It basically demonstrates common, but key differences in configuration in an easy, understandable manor.