Basics of OS, UNIX and shell programming / 
Instructional Software Research and Development (ISRD) Group 
 - New Delhi :  Tata McGraw-Hill,  c2007 
 - xvii, 304 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780070616813 070616817 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UNIX (Computer system)<br/>Operating systems (Computers)