Originally Posted by rds087
How UNIX is Different from LINUX.
Depending on who you talk to UNIX can either be:
(a) a generic term for a class of operating systems of which Linux is a subclass,
(b) one of the operating systems directly descended from the original UNIX developed at AT&T Bell Labs.
Linux started as an effort to reverse-engineer the properties and capabilities of the UNIX kernel. Linux/GNU distributions for the most part strive to be compatible on the user-level with UNIX.