Das, Sumitabha. <br/><br/>
UNIX concepts and applications /  
Sumitabha Das.  
 - 4th ed. 
 - New Delhi :   Tata McGraw Hill Education,   c2006 [Reprinted 2009]. 
 - xxi, 671 pages :   illustrations ;   24 cm.  
<br/><br/> Includes index.  
<br/><br/><label>ISBN: </label>978007065463 0070635463 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UNIX (Computer file).<br/>Operating systems (Computers). 
<br/><br/><label>Dewey Class. No.: </label>005.43 DAS