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> Also POSIX would be even less relevant, and very few would be buying BeOS X for doing Linux coding.

I don't think I'd enjoy a GNU userland/glibc/Linux monoculture, quite honestly. I'm glad POSIX exists to have a slightly less moving target.

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That was exactly part of my point, with BeOS that wouldn't have happened anyway.

The only successful UNIX desktop is OS X.

Well, the last major revision to the Single Unix Specification was released in 2008. Ever since then, Linux has basically become the defacto POSIX standard. So while glibc may not rule the roost, most POSIX OSes bend to the will of the GNU userland and the Linux monoculture in many ways. It's not really like the old days with Sun, IBM, DEC and even Microsoft with Xenix. POSIX is being washed away a little more every day.

Proof being that other POSIX and Windows, now go with Linux kernel ABI compatibility instead of POSIX.

And it isn't at all relevant on mobile OSes.

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