[Jackass]

Before there was Linux, before there was open source, there was (and still is) an operating system called Unix that was robust, stable and widely admired. It was also available under license to anyone that wanted to use it, because it had been developed not by a computer company, but by personnel at AT&T's Bell Labs, which for a time was not very aware of its status as the incubator of a vital OS.
The Consortium Info