Unix concepts and application. 
By Sumitabha Das. 
 - 4th. 
 - New Delhi.:  Tata mcgraw hill.,  2008. 
 - xviii, 671 p.:  ill.;  20 cxm. 
<br/><br/><label>ISBN: </label>978-0-07-063546-3 0-07-063546-3 
<br/><br/><label>Subjects--Index Terms: </label>Computer science Unix 
<br/><br/><label>Dewey Class. No.: </label>005