From Citizendium, the Citizens' Compendium
- Unix : A computer operating system originally conceived and developed by a group of researchers as an unofficial project while they were working at AT&T's Bell Laboratories.
- Minix : Add brief definition or description
- Linux history : Add brief definition or description
- Linux kernel : The core piece of the Linux operating system that controls processes, manages memory, and loads device drivers.
- Linux distribution : A version of Linux comprised of the Linux kernel, all or part of the GNU operating system, and assorted other software.