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Mac OS X Leopard receives UNIX 03 certification: http://arstechnica.com/apple/news/2007/08/mac-os-x-leopard-receives-unix-03-certification.ars http://arstechnic

• ori_b 16y ago
  Sure, but that just means it provides the correct library calls, has the right shell utilities, and so on. It says nothing about the pedigree, or the amount of security. It's undoubtedly a good thing, but it's not important in this context.
  • pavs 16y ago
    Where do you draw the line when a BSD based OS has been customized to the extend that it can't be considered a BSD based OS?
    • sp332 16y ago
      That only describes the interface, not the implementation. It says (almost) nothing about the kernel, or security.
      • pavs 16y ago
        You are right. I just double checked my facts and OSX kernel is actually a hybrid kernel and not a direct descendant of BSD flavor (which was my impression). My mistake.
• sp332 16y ago
  That's like saying Windows is UNIX-based because it conforms to POSIX.1.
  • abrahamsen 16y ago
    That would be like calling someone a Ph.D. after completing kindergarten. UNIX 03 certification means MacOS X is a UNIX. It doesn't say anything about its status as a BSD though.