Linus Torvalds wrote:

   http://www.kernel.org/pub/linux/kernel/Historic/old-versions/RELNOTES-0.01

   Sadly, a kernel by itself gets you nowhere. To get a working system you
   need a shell, compilers, a library etc. These are separate parts and may
   be under a stricter (or even looser) copyright. Most of the tools used
   with linux are GNU software and are under the GNU copyleft. These tools
   aren't in the distribution - ask me (or GNU) for more info.

Mike