Ray, Joan <br/><br/>
UNIX System administration in 21days :  Sams teachn yourself /  [textbook] 
by Joan Ray and William Ray 
 - New Delhi :  BPB publications,  2000. 
 - xv, 811 pages :  illustrations ;  24 cm 
<br/><br/>Includes bibliographic reference and index. 
<br/><br/><label>ISBN: </label>0672316609 817635354X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)
<br/><br/><label>LC Class. No.: </label>QA76.76.063  / RAY