What is Unix?

Unix is more widespread than you might think. Unix is a catch-all term that can describe a family of operating systems including Linux, BSD, Solaris, AIX and MacOSX (which is the operating system that runs on every Mac). In other words, these days, we can pretty much say that any desktop computer that is not running windows is running a form of unix. Clearly most desktop computers run windows, however most servers run Unix.