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Timeline for Why was MacOS unix certified?

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Jun 6, 2023 at 21:43 comment added Knickers Brown @Davislor yes and "Meanwhile its creators went on developing their version" is UNIX versions 8 thorugh 10
Jun 6, 2023 at 19:35 comment added Dai @AcceptableName "Then the creators abandoned it and made something else" - would that be Plan 9?
Jun 6, 2023 at 11:42 comment added Knickers Brown @Davislor If you're looking for the translation, UNIX is the funny OS, and MacOS is the work-alike.
Jun 6, 2023 at 11:16 comment added Knickers Brown @Davislor it's a joke about a funny OS that nobody would have heard of if it wasn't turned into such a seemingly-endless variety of commercial products that it took committees and and specifications to reign in, leading to a set of tests that define it. Meanwhile its creators went on developing their version which the world only got to see in retrospect. Then the creators abandoned it and made something else, while the world built a work-alike of what had become of the creator's first OS.
Jun 6, 2023 at 2:33 comment added Davislor @AcceptableName Bell Labs were the original owners of the trademark, before there was an Open Group? So, yes, they were an official UNIX.
Jun 5, 2023 at 12:04 comment added Knickers Brown In addition to Linux not being certified as UNIX, none of the Bell Labs UNIX versions were ever certified. Does this mean they are not UNIX? See Master Foo Discourses on the Unix-Nature. catb.org/~esr/writings/unix-koans/unix-nature.html
Jun 4, 2023 at 17:59 comment added Stephen Kitt A couple of Linux distributions were certified a few years ago.
Jun 4, 2023 at 16:38 comment added davidbak Used to be military contractors required such certification, by military mandate. It's also the reason by Windows NT came out of the door with a POSIX subsystem. (USA)
Jun 4, 2023 at 16:09 history answered Will Hartung CC BY-SA 4.0