Find out how Linux differs from other operating systems.
Linux is in essence an operating system.
The open source OS sits underneath all of the other software on a computer, receiving requests and relaying them to the computer's hardware.
It is also different in that there are many different distributions of Linux, thanks to its open source nature.
Although most people use a Windows or Mac OS, Linux is a very popular choice - around two-thirds of the web pages on the Internet are said to have been generated by servers running it.
The Linux kernel is written in the C programming language.