> in much the same way OSX is BSD underneath The difference is that Linux isn't, and doesn't claim to be a whole system. For example, Android isn't Ubuntu, but

> in much the same way OSX is BSD underneath The difference is that Linux isn't, and doesn't claim to be a whole system. For example, Android isn't Ubuntu, but Android and Ubuntu are equally Linux. EDIT: I am not trying to make the "Linux is just a kernel" point here. Android is by no means a "traditional" distribution of Linux, but I just don't see why that makes it "not Linux". Busybox is available for it (Android is designed for embedded systems, after all) so what's the difference?