Linux all

Tammy Fox

Red Hat Enterprise Linux 5
® ®

Administration
UNLEASHED

800 East 96th Street, Indianapolis, Indiana 46240 USA

Red Hat Enterprise Linux 5 Administration Unleashed
Copyright ® 2007 by Sams Publishing All rights reserved. No part of this book shall be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, orotherwise, without written permission from the publisher. No patent liability is assumed with respect to the use of the information contained herein. Although every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions. Nor is any liability assumed for damages resulting from the use of the information contained herein.ISBN-10: 0-672-32892-5 ISBN-13: 978-0-6723-2892-3 Library of Congress Catalog Card Number: 2005910113 Printed in the United States of America First Printing: April 2007 10 09 08 07 4 3 2 1

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Contents at a GlanceIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Part I: 1 2 3 Part II: 4 5 6 7 8 Part III: 9 10 11 Part IV: 12 13 14 15 16 17 18 19 Part V: 20 21 22 Installation and Configuration Post-Installation Configuration 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 57

Installing Red Hat Enterprise Linux. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operating System Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Operating System Core Concepts 97Understanding Linux Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Working with RPM Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Analyzing Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 151 Managing Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 64-Bit, Multi-Core, and Hyper-Threading Technology Processors . . . . . . . . . . 195 System Administration 203

Managing Users and Groups. . . . . . . . . . . . . . . . . . . . . ....