The first desktop version, Mac OS X 10.0, was released on March 24, 2001. Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard and all releases from OS X 10.8 Mountain Lion to macOS 14 Sonoma are UNIX 03 certified
I don’t like MacOS, but it’s actually able to be called UNIX.
I don’t like MacOS, but it’s actually able to be called UNIX.
I’m surprised you don’t lose Unix certification with crap like case insensitive filesystem defaults.
Being able to be called Unix just means paying for certification. No more, no less.