Is `Tru64 UNIX` open source

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Is Tru64 UNIX an open source/free or commercial system? Does it work on 32-bit platform? and what are its features in compare with *BSD & Linux system?

Best Answer

It is HP's commercial 64-bit UNIX operating system (based on the Mach kernel - which Mac OS X is also based on)

It is for the Alpha instruction set architecture only - although there was a short lived Intel port.

Broadly speaking, usage is similar to many other *nixes, but the location of various config files, executables etc may be not where you expect.