Well, this is what Linus (father of Linux) said (taken from wikipedia) :
In the "Notes for linux release 0.01", Torvalds lists the GNU software that is required to run Linux:
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.
In 1992, he suggested releasing the kernel under the GNU General Public License. He first announced this decision in the release notes of version 0.12. In the middle of December 1992 he published version 0.99 using the GNU GPL.
Linux and GNU developers worked to integrate GNU components with Linux to make a fully-functional and free operating system.[
Last edited by poornaMoksha; 30Jan2011 at 15:53..