Garfinkel, Simson <br/><br/>
Practical UNIX security / 
Simson Garfinkel and Gene Spafford. 
 - Sebastopol, Calif. :  O'Reilly & Associates,  1991. 
 - xxvii, 483 p. :  ill. ;  23 cm. 
 - Computer security .
<br/><br/>Includes bibliographical references (p. 453-460) and index. 
<br/><br/><label>ISBN: </label>0937175722 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers).<br/>UNIX (Computer file).<br/>Computer security.