Vickery, Christopher. Unix shell programmer`s : interactive workbook / Christopher Vickery. - New Delhi : Pearson Education Asia , 1999 rep 2001. - xvii,596p. : ill.,maps ; 23cm . NULL ISBN: Rs. 250.00 (Pbk) Subjects--Index Terms: OPERATING SYSTEMS(COMPUTERS) Dewey Class. No.: 005.432 / VIC/U