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<< really? what separates various BSDs from unix? >>
UNIX is a trademark. Last I heard the trademark owner charges buttloads of money for an OS to become an UNIX. I know most free projects out there are not going to pay it. But this might have changed in the past few years, you never know. >>
your talkin out of your a$$, there are so many flavors of UNIX which include FreeBSD, OPendBSD, Soalris, SUnOS, HP-UX, AIX, Linux, etc., and loads of distros on top of them! Irregardless if the term UNIX is copywrighted and people pay to use it, BSD and all the others are absolutely different flavors of UNIX. >>
Look it up. OpenBSD is NOT a UNIX. It says so on their site. Solaris, SunOS, HP-UX and AIX (not positive about the last two) are certified UNIXes. Linux is UNIX-like, OpenBSD is UNIX-like, FreeBSD may be a UNIX, not sure.