3.) MacOS X is as much a "Unix flavour" as Windows is, it is the latest version of an object oriented piece of crap operating system that was originally called NeXTSTEP. The only similarities it has to an actual Linux/UNIX distribution are the various pieces of code that Steve Jobs stole from FreeBSD. 4.) "Linux+GNU tools is not a Unix flavour, as it has never been certified as so. It's more of an "emulator" that tries to be compliant to Unix but without being Unix." Wow, I honestly think reading this just made me dumber, my brain is throwing a fit trying to add up the number of ways this statement is flat out idiotic. Keep your verbal diarrhea to yourself or go correct people on sesamestreet.com where you may actually have a chance of finding someone who knows less than you do.