@book{1983--bell-2 ,note={Note: previously printed as Volumes 2A and 2B of \cite{1979--bell}} ,title={{UNIX time-sharing system: UNIX programmers manual, seventh edition, volume 2}} ,booktitle={{UNIX time-sharing system: UNIX programmers manual, seventh edition, volume 2}} ,ISBN={0--03--061743--X} ,publisher={Holt, Rinehart, and Winston} ,address={New York} ,year={1983} }