Linus Torvalds wrote Linux with the cooperation of thousands of programmers, and it is a free and open-source operating system based on the UNIX system. UNIX is a 1991 operating system that has the advantage of being easily transferable across various sorts of computers. As a result, there are UNIX versions for practically every type of machine, from PCs and Macs to workstations and supercomputers.

Unlike other operating systems, such as MacOS (Apple operating system), UNIX is not intended to be easy to use, but to be extremely flexible. Although significant attempts are being made to make it easier to use, it is generally as straightforward to use as other operating systems.