Hey, now that I think about it, Caldera (was SCO, now I think it's SCO Group - not sure) released some modern Unix source code, specifically the regexp libraries and a regexp utility ( I believe awk, but I'm not sure ). I can't find the site now though, but I did find this:
http://linux.oreillynet.com/pub/a/li...8/caldera.html

Interesting read, although it speaks of the release of the old code I linked to above.

Also, it should be noted that TUHS worked out a deal to license the old Unix binary system images with SCO a long time ago. That's when I got SystemV running - I applied for and received a free non-commercial license for it. It's just not bound to the same license now, and code is available.

Anyways, I'll just stick to Linux, and failing that, *BSD, and not really have to deal with it.