>"If you want to travel around the world and be invited to speak at a lot
>of different places, just write a Unix operating system."
>(By Linus Torvalds)
>
>From:
>
>The history of Linux: http://ragib.hypermart.net/linux/
>
>Is it Unix or not? Only Linus knows for sure...

There you go. I also understand that most of what composes Linux was taken from the GNU project (or something like that) that predates Linux. The main piece that Linus Torvalds provided was the OS kernel.