OSU Physics Faqs : Linux : Linux for Physics Majors : What is Linux?
Linux was created by Linus Torvalds when he was a student of the University of Helsinki in 1991. He wanted to created a free clone of Unix for personal computers. Using ideas from Minix (a simpler and earlier Unix clone for PC’s) Linus began work on his kernel as a class project. Linux is now a fully functioning clone of Unix for PC’s. It is freely distributable and is covered under the GNU Public License.