Das, Sumitabha <br/><br/>
Unix Concepts and Application. 

 - 4th 
 - New Delhi  Tata McGraw Hill  2009 
 - viii, 671 
<br/><br/><label>ISBN: </label>978-0-07-0635463 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science.