The nucleus of the Linux operating system. The Linux kernel, which was developed by Linus Torvalds, was integrated with software from the GNU Project and other sources to create the actual Linux operating system. See Linux, GNU/Linux and kernel.
Linux-kernel Sentence Examples
His dense and friendly comments have guided many programmers on the linux kernel mailing list.
Also, make sure you are on the linux-kernel mailing list.
The Linux kernel is used right from small embedded devices, scaling up to large mainframes.
UPDATE: Linux kernel module handing has changed considerably, see the modules section.