linux-penguin.jpg
The Linux Mascot
Linux is a Unix-based operating system that is free for anyone to download, use and make changes to. It started out as just a hobby for its creator, Linus Torvalds, but is now one of the most popular operating systems in use today. Linux uses the GNU General Public License, and its source code (the original programming that makes the operating system work) is available for anyone who is interested in seeing it. Thanks to the fact that it is open-source, Linux is constantly releasing new kernels of the operating system that incorporate changes made by users.

Linux was one of the first in a wave of free, open-source computer software, including Mozilla products, such as the internet browser Firefox and the mail agent Thunderbird.

Linux even has its own mascot, Tux the penguin.

References:

Linux Online-- The official Linux website

Image retrived Dec. 4, 2009 from Eukhost