Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trade-
marks. Where those designations appear in this book, and the publisher was aware of a trademark claim, the
designations have been printed with initial capital letters or in all capitals.
Ubuntu is a registered trademark of Canonical Limited, and is used with permission.
Debian is a registered trademark of Soware in the Public Interest Incorporated.
CentOS is a registered trademark of Red Hat Inc., and is used with permission.
FreeBSD is a registered trademark of e FreeBSD Foundation, and is used with permission.
e Linux Tux logo was created by Larry Ewing, lewing@isc.tamu.edu.
e authors and publisher have taken care in the preparation of this book, but make no expressed or implied
warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for inciden-
tal or consequential damages in connection with or arising out of the use of the information or programs con-
tained herein.
For information about buying this title in bulk quantities, or for special sales opportunities (which
may include electronic versions; custom cover designs; and content particular to your business, train-
ing goals, marketing focus, or branding interests), please contact our corporate sales department at
corpsales@pearsoned.com or (800) 382-3419.
For government sales inquiries, please contact governmentsales@pearsoned.com.
For questions about sales outside the U.S., please contact intlcs@pearson.com.
Visit us on the web: informit.com
Library of Congress Control Number: 2017945559
Copyright © 2018 Pearson Education, Inc.
All rights reserved. Printed in the United States of America. is publication is protected by copyright, and
permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval
system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or
likewise. For information regarding permissions, request forms and the appropriate contacts within the Pear-
son Education Global Rights & Permissions Department, please visit www.pearsoned.com/permissions/.
ISBN-13: 978-0-13-427755-4
ISBN-10: 0-13-427755-4
1 17
我的内容管理
收起
我的收益 登录查看自己的收益
我的积分
登录查看自己的积分
我的C币
登录后查看C币余额
我的收藏 
我的下载 
下载帮助 
评论3