Example: "Web servers commonly run the Linux operating system."

Linux is a free, open source, Unix-like operating system. It is available in several different distributions, including CentOS, Debian, Ubuntu, and Red Hat. Linux can run on several different hardware platforms and may even be used as the OS for electronics devices besides computers. Though Linux is not commonly installed on home computers, it is widely used by Web hosting companies and has many other specialized applications.

Updated: January 25, 2010

Definition from the PC Glossary