By the way, since Novell owns Unix and SCO distributes it, why does not Microsoft buy both SCO and Novell, so it can own Unix?
Why would they? IIRC they owed part of it already and sold it in 2000 (gave it back). They would never make there money back. Moreover, it gets them no farther down the road with their os. Doesn't IBM offer a student version of AIX?