norman(a)nose.cs.utoronto.ca (Norman Wilson) wrote: Notice my use of the words "nearly" and "almost" in the part you responded to. Seriously though, you gotta agree that until 4.3BSD inclusive, Berkeley was basically adding to and extending V7. Sure they added a *lot* and extended many of the existing facilities, but with very few exceptions, it was all additive, virtually no V7 facility (except the mpx you mentioned) was removed. Yes, they added fsck, but icheck is still there! (No one uses it of course, but knowing that nobody removed it gives a warm fuzzy feeling.) The same goes for almost everything else. Here is the acid test: time-teleport a V7 user from 1979 to a VAX running 4.3BSD, set PATH=/bin:/usr/bin (no /usr/ucb), do stty old (old tty driver) and stty ek (erase # kill @) and see if he feels at home or not. Of course I never use my systems in this way, I make extensive use of Berkeley UNIX facilities, but I like it much better to use a system that is additive rather than substitutive with respect to Original UNIX. MS