Though OS X - 10.5 (Leopard) is suppose to be an actual Unix OS, according to: http://en.wikipedia.org/wiki/Single_UNIX_Specification#Mac_OS_X
and http://www.apple.com/macosx/leopard/technology/unix.html
Though OS X - 10.5 (Leopard) is suppose to be an actual Unix OS, according to: http://en.wikipedia.org/wiki/Single_UNIX_Specification#Mac_OS_X
and http://www.apple.com/macosx/leopard/technology/unix.html