Glass, Graham. <br/><br/>
UNIX for programmers and users / 
Graham Glass and King Ables. 
 - 3rd ed. 
 - Upper Saddle River, N.J. :  Pearson Education,  c2003. 
 - xxxi, 687 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 673-674) and index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0130465534 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UNIX (Computer file)<br/>Operating systems (Computers)