Sobell, Mark G. A practical guide to Linux commands, Editors, and Shell programming / Mark G. Sobell. - Upper Saddle River, N.J. : London : Prentice Hall PTR ; Pearson Education [distributor], c 2005. - xxxvii, 965 p. : ill. ; 24 cm. Includes index. ISBN: 9780131478237 Subjects--Topical Terms: Operating systems (Computers)Linux. Dewey Class. No.: 005.446 S M A 221