[bluejekyll]

I’ve always thought POSIX compliance is the primary thing vendors should be targeting for portability. I was trying to find something that would explain the difference between POSIX and UNIX compliance, but there’s not great sources on this specifically.

I imagine UNIX is a superset of POSIX, I’d be curious if anyone knows of a simple comparison between the two?

[chuckadams]

Far as I can tell, the Single Unix Specification (SUS) is POSIX plus one extra standardized api, namely curses.