> While macOS isn’t POSIX-certified, it is Single Unix Specification UNIX 03 reg... | Hacker News

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		als0 on April 11, 2022 \| parent \| context \| favorite \| on: Impressions from a first-time Mac user > While macOS isn’t POSIX-certified, it is Single Unix Specification UNIX 03 registered and compliant. This sounds wrong. Isn’t POSIX a mandatory subset of the Single Unix Specification? Hence it is inherently certified.

loganmarchione on April 12, 2022 [–]

OP here. I was mainly going off of this (2nd paragraph).

https://en.wikipedia.org/wiki/Darwin_(operating_system)

als0 on April 13, 2022 | [–]

From https://en.wikipedia.org/wiki/Single_UNIX_Specification

"system developers generally aim for compliance with POSIX standards, which form the core of the Single UNIX Specification"

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