Gopalan, N P. A beginner`s guide to unix / by N P Gopalan and B. Sivaselvan. - New Delhi : PHI Learning , 2009. - 272p. : ills. ; 24cm ISBN: 9788120337862 Rs.195.00 Subjects--Index Terms: OPERATING SYSTEMS Dewey Class. No.: 005.432UNI / GOP/B