2.6 Summary
The origins of the Linux operating system can be traced back to the work of Linus Torvalds and Richard Stallman in the form of the Linux kernel combined with the tools and compilers built by the GNU project.
Over the years, the open source nature of Linux has resulted in the release of a wide range of different Linux distributions. One such distribution is Ubuntu, based on the Debian Linux distribution and created by Canonical Ltd, a company founded by Mark Shuttleworth.