Post by @Dialectical_Specialist@quokk.au

2026-10-13 21:15 UTC

Wait so which is more accurate? Unix-based or unix-like? Also as someone who thought they knew this stuff already, what is “the SUS spec” or are you making some pun on suspect?

Replies (2)

@ilinamorato@lemmy.world 2026-10-13 23:25

Both are accurate. Something can be Unix-like (using many of the same paradigms and keywords and such) without being derived from the source code of Unix, but BSD actually is originally based on that code. Linux is Unix-like but not Unix-based. BSD is both, as is MacOS. Windows is neither. SUS means “Single Unix Specification,” I think. When it went from being an OS to being a spec, that’s what they called the certification. Though “SUSpect” would be a great pun on the idea, yeah. Big “Among Us” opportunities.

Open ##5021100
@historicaldocuments@lemmy.world 2026-10-14 00:15

The BSDs are UNIX-like because being “UNIX” involves paying to go through a certification process, and I don’t believe any of them target strict compliance. Solaris is a UNIX, as is HP-UX, AIX, and Apple OSX. The BSDs should all be pretty close, though.

Open ##5022080