OS X is actually compliant with the UNIX spec. http://blog.opengroup.org/2012/07/25/apple-registers-mac-os-x-10-8-mountain-lion-to-the-unix-03-standard/ http://

OS X is actually compliant with the UNIX spec. http://blog.opengroup.org/2012/07/25/apple-registers-mac-os-x-10-8-mountain-lion-to-the-unix-03-standard/ http://blog.opengroup.org/2012/07/25/apple-registers-mac-os-... That's one of two reasons that I like using it. The other is that it will always run the Adobe CS painlessly. Can't really find that combination anywhere else.