What is Linux? Linux is an operating system similar to — though, as we’ll see, not directly descended from — Unix. Like most Unix-like OSes, Linux is made up of several components.

On "1-2-3-4-5-6-7-8-9-0 Day," tech lovers all over the world celebrated the moment when the clocks in the popular Unix computer operating system struck that exact stream of numbers. But on Feb. 13 ...

A fascinating little point made in a much longer piece about the smartphone wars. One that makes me wonder whether Unix can now be considered to be the most successful operating system of all time ...

Linux isn't a certified Unix system, and some say it definitely isn't Unix. The key question for a business is if a commercial Unix flavor is enough like Linux that you can make an easy transition ...

There were 5198 reported vulnerabilities: 812 Windows operating system vulnerabilities; 2328 Unix/Linux operating vulnerabilities; and 2058 Multiple operating system vulnerabilities. Emphasis mine.

Indeed, OS X is a fully featured Unix operating system (certified as Unix by the Open Standard Groups).