4 ms·
> If however you had already been experiencing systems like UNIX that ran on everything from mainframes to PDP-11/70's you would not have been quite so surprise
by blattimwind 8y ago
> If however you had already been experiencing systems like UNIX that ran on everything from mainframes to PDP-11/70's you would not have been quite so surprised.
Back then (R) there wasn't one UNIX, rather everyone had their flavour of it for their kind of machine. I don't think source compatibility became mainstream until the late 80s to 90s, before that it was all ports.