Newham, Cameron and Rosenblatt, Bill. <br/><br/>
Learning the bash shell / 

 - 3rd ed. 
 - California,  O'Reilly,  c2005. 
 - xvi, 333p. ;  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0596009658 
<br/><br/><label>Dewey Class. No.: </label>005.438