Kelly-Bootle, Stan. Understanding UNIX / Stan Kelly-Bootle. - 2nd ed. - San Francisco : SYBEX, 1997 - xxviii, 587 p. : ill. ; 23 cm. Includes index. ISBN: 8170297974 $29.95 Subjects--Topical Terms: UNIX (Computer file) Dewey Class. No.: 005.432 / KEU 1997