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 ...

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

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 ...

The Unix revolution—thank you, Uncle Sam? Why did the Unix operating system expand so quickly in the 1970s and 1980s?

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 ...

The Unix revolution—thank you, Uncle Sam? Why did the Unix operating system expand so quickly in the 1970s and 1980s?

If you're new to the UNIX operating system, especially if you're familiar with Windows, you'll find that the file access control mechanisms might not be exactly what you expect.

Wheelwright, Steven C. "Sun Microsystems and the UNIX Operating System: Creation of a Standard?, Teaching Note." Harvard Business School Teaching Note 690-042, December 1989.