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Linux (kernel)
This article is about the Linux Kernel. For the system that the kernel runs under, see GNU/Linux
Linux is a Unix-like kernel. It was created in April 1991 in University of Helsinki, Finland by Linus Torvalds. It is one of the most prominent examples of free software. It is released under GNU General Public License version 2 (GPLv2), with some proprietary binary modules.
Being a kernel, Linux sets the foundations for the operating system but lacks the actual userspace programs commonly associated with one. Due to historical purposes, Linux ships with GNU core utilities in order to provide a fully functional system. Due to this fact, some refer to it as GNU/Linux, which is a term Richard Stallman repeatedly tries to enforce.
Contents
History
While being a student in the University of Helsinki, Linus Torvalds created the kernel as a hobby. He advertised it on the Usenet group comp.os.minix shortly after the first alpha was created.
Hello everybody out there using minix -
I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. This has been brewing since april, and is starting to get ready. I'd like any feedback on things people like/dislike in minix, as my OS resembles it somewhat (same physical layout of the file-system (due to practical reasons) among other things).
I've currently ported bash(1.08) and gcc(1.40), and things seem to work. This implies that I'll get something practical within a few months, and I'd like to know what features most people would want. Any suggestions are welcome, but I won't promise I'll implement them :-)
Linus ([email protected])
PS. Yes - it's free of any minix code, and it has a multi-threaded fs. It is NOT protable (uses 386 task switching etc), and it probably never will support anything other than AT-harddisks, as that's all I have :-(.
Soon after, the early adopters of the Linux kernel expanded greatly.
Controversy
In 1992, with the growing popularity of the Linux kernel, creator of MINIX Andrew S. Tanenbaum started an argument with Linus Torvalds in the comp.os.minix newsgroup, claiming that how the Linux kernel was created, it was already obsolete. The debate was primarially about Microkernels vs Monolithic kernels. It is widely considered one of the earliest flame wars on the internet
In the late 1990's, RMS saw that systems that had the Linux kernel as the base were becoming more and more popular. However, these were, in fact, a GNU system because it utilizes the incomplete GNU OS that was planned to be completed with the [GNU Herd|Herd]] kernel. Because of this, he coined the new terms for the system: GNU/Linux (Pronounced Ganooo slash Linux), or (and lesser used) GNU+Linux (Ganooo plus Linux). It was advised to not simply say GNU Linux because it would imply that Linux was a creation of the GNU Project.
See also
External Links
The English Wikipedia article on the Linux kernel
The Wikipedia article on the debate between Tanenbaum and Torvalds
