Dear Wikipedia authors: macOS is actually Unix (like certified and all and has direct lineage to the OG Unix).
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Thomas 🔭✨ (thomasfuchs@hachyderm.io)'s status on Monday, 14-Aug-2023 13:05:27 JST Thomas 🔭✨
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Thomas 🔭✨ (thomasfuchs@hachyderm.io)'s status on Tuesday, 15-Aug-2023 01:04:21 JST Thomas 🔭✨
Linux is a Unix-like operating system (it does not stem from the OG Unix of the late 60s/early 70s)
macOS is a (actual) Unix operating system.
(Note that this isn't a comment on the quality of these operating systems—both Linux and macOS have their good parts and their bad parts; and I use and like both.)
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Johannes Factotum (pikesley@mastodon.me.uk)'s status on Tuesday, 15-Aug-2023 01:04:23 JST Johannes Factotum
@mos_8502 @thomasfuchs you're thinking of Linux I think
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Studio 8502 :verified: (mos_8502@oldbytes.space)'s status on Tuesday, 15-Aug-2023 01:04:25 JST Studio 8502 :verified:
@thomasfuchs Most of it, yeah. The XNU kernel is kind of a hybrid of Mach and some BSD stuff and a bunch of Apple original code.
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Thomas 🔭✨ (thomasfuchs@hachyderm.io)'s status on Tuesday, 15-Aug-2023 01:22:10 JST Thomas 🔭✨
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Johannes Factotum (pikesley@mastodon.me.uk)'s status on Tuesday, 15-Aug-2023 01:22:12 JST Johannes Factotum
@thomasfuchs @mos_8502 are you sure? As far as I understand it, Kernighan & Ritchie invented Linux at CERN in 1991
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mxk (mxk@hachyderm.io)'s status on Tuesday, 15-Aug-2023 16:28:50 JST mxk
@thomasfuchs how much "actual" Unix code is contained in MacOS is arguable, but yes recent versions are technically a true UNIX and certified, while OSX originally wasn't certified and had a ton of incompatibilities to the SUS spec.
This is explained rather well here: https://www.quora.com/What-goes-into-making-an-OS-to-be-Unix-compliant-certified
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