Terry Lambert's answer to What goes into making an OS to be Unix compliant certified? - Quora

Answer: A lot. I was the tech lead at Apple for making Mac OS X pass UNIX certification, and it was done to get Apple out of a $200M lawsuit filed by The Open Group, for use of the UNIX™ trademark in advertising. The lawsuit was filed because the owner of Mac OS X Server kept putting “UNIX” on ...

[Nyoho]

Mac OS XをUNIXにした方の話。

[NOV1975]

おもしろい

[rgfx]

via:"macOS(OS X)を「UNIX」にするために作業した人の話はおもしろいので皆さま既に読まれたと思います。" https://x.com/tadsan/status/1831863515759726708

[mattn]

Mac OS X が UNIX になるまでの道のり。すごい。

[delphinus35]

最初だけ読んだけどこれは大変そう……時間あるときにあと読みたい。