What are the licensing/copying terms on the Linux kernel?
• (RRR) In the root directory of the Linux kernel source tree (e.g. /usr/src/linux/), you will find a file COPYING. The file states that the Linux kernel is placed under the GNU General Public License (version 2), a copy of which is provided. If still in doubt, post to the appropriate forums (such as gnu.misc.discuss) or ask a lawyer, but don’t ask about it on the linux-kernel list.