Linus TorvaldsLinus Torvalds  is the cause of this completely free operating system. In the early 90s, he wanted to develop its own operating system for his final project study.  Linus Torvalds was intended to develop a version of UNIX that runs on a 80386 type architecture The first UNIX clone running on a PC was Minix, written by Andrew Tanenbaum, a minimal operating system that can be used on PC. Linus Torvalds then decided to expand the possibilities of Minix, creating what would become Linux. Amused by this initiative, many people contributed to help Linus Torvalds to realize this system, so that in 1991 a first version of the system was launched. It was in March 1992 that was released the first version containing almost no bug.

With the increasing number of developers working on this system, it has been able to integrate quickly free redevelopments of tools available on commercial UNIX systems. New tools for Linux now appear at breakneck speed.

The originality of this system lies in the fact that Linux was not developed for commercial purposes. Indeed no line of code has been copied from the original UNIX systems (Linux, in fact draws on many commercial UNIX versions: UNIX System V). So everyone, since its inception, is free to use but also to improve it.

While Linux was originally designed to run on PC platform, it has now been focused (that is to say adapted) to many other platforms such as Macintosh, SPARC stations, DEC Alpha stations, and even platforms such as personal assistants (PDA), even videogame consoles!