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I was going by the fact that tenth edition Unix was released on 1989, while Plan 9 was first released in 1992: https://en.wikipedia.org/wiki/Research_Unix https
by nsajko 3y ago
I was going by the fact that tenth edition Unix was released on 1989, while Plan 9 was first released in 1992: https://en.wikipedia.org/wiki/Research_Unix https://en.wikipedia.org/wiki/Research_Unix
Pehaps this is misleading.
- smorrow 3y agoSome clues: The mk paper (and Unix man page) doesn't mention rc. Plan 9 existed since the mid-80s. This sentence in the Unix rc(1) sure makes it seem like rc was Plan 9-first: Environment entries for variables are kludgy for UNIX compatibility.
- smorrow 3y agoThe first paragraph of https://archive.org/details/rc-shell/ https://archive.org/details/rc-shell/ So rc was made for Plan 9. The examples in that paper are definitely on tenth edition Unix, I think this would be because A fairly complete version of Plan 9 was built in 1987 and 1988, but development was abandoned. In May of 1989 work was begun on a completely new system from https://doc.cat-v.org/plan_9/1st_edition/designing_plan_9 https://doc.cat-v.org/plan_9/1st_edition/designing_plan_9 (1990).