Matotek, Dennis. <br/><br/>
Pro Linux system administration  learn to build systems for your business using free and open source software / 

 - 2nd ed. 
 - New York :  Apress,  c2017. 
 - xxiii, 998 p. :  ill. ;  25 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781484220078 
<br/><br/><label>LC Class. No.: </label>23548-23553 
<br/><br/><label>Dewey Class. No.: </label>004  / MAT