[t1m]

Back when I was in University, we had an Amdahl mainframe with Unix running under VM. The directory structure included an awful lot of source code. I remember porting source for lex and yacc to my PC-XT running Borland's Turbo C. I assume it was licensed to Universities and source was included under an educational clause, though I'm not exactly sure.

I wonder which version of unix I was using. This would have been around December of '87.

[zokier]

> I assume it was licensed to Universities and source was included under an educational clause, though I'm not exactly sure.

I think that is exactly how BSDs got started, and later led to the famous AT&T vs BSDi lawsuit.

[Taniwha]

'87 - probably a System VR1 variant (though it might have been from System III)

[hapless]

It was either CMS (a single-user UNIX-like commonly distributed with VM) or VM/IX aka AIX/370 (an IBM-flavored SysV, but almost totally unrelated to the other AIX products.)