Tecnico

LPI LINUX
CERTIFICATION
IN A NUTSHELL
A Desktop Quick Reference

LPI LINUX
CERTIFICATION
IN A NUTSHELL
A Desktop Quick Reference

Jeffrey Dean

Beijing • Cambridge • Farnham • Köln • Paris • Sebastopol • Taipei • Tokyo

LPI Linux Certification in a Nutshell
by Jeffrey Dean Copyright © 2001 O’Reilly & Associates, Inc. All rights reserved. Printed in the United States of America.Published by O’Reilly & Associates, Inc., 101 Morris Street, Sebastopol, CA 95472.

Editor: Chuck Toporek Production Editor: Mary Brady Cover Designer: Ellie Volckhausen Printing History:
June 2001: First Edition.

Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly & Associates, Inc. The association between the image of a Texas longhorncow and LPI Linux certification is a trademark of O’Reilly & Associates, Inc. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly & Associates, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps. Linux is a registered trademark ofLinus Torvalds. Red Hat and RPM are registered trademarks of Red Hat, Inc. Windows is a registered trademark of Microsoft Corporation. PostScript and Portable Document Format (PDF) are registered trademarks of Adobe Systems, Inc. Jaz and Zip are registered trademarks of Iomega Corporation. The Glossary is copyrighted by the Linux Professional Institute (LPI) and is used with permission. While everyprecaution has been taken in the preparation of this book, the publisher assumes no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein.

ISBN: 1-56592-748-6 [M] [8/01]

About the Author
Jeffrey Dean is a freelance author, editor, and consultant in Philadelphia, Pennsylvania. Jeffrey has professional experience in IT management,training delivery, and system administration of Linux, Solaris, VMS, AS/400, and Windows NT/2000. Jeffrey holds an undergraduate degree in electrical engineering from the University of Pittsburgh and a master’s degree in engineering with emphasis in computer design from Penn State. He holds the Linux Professional Institute Level 1 (LPIC-1) and Red Hat Certified Engineer (RHCE) certifications.Colophon
Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The animal on the cover of LPI Linux Certification in a Nutshell is a Texas longhorn cow. Christopher Columbus originally brought cattle to theNew World from Spain. Descendants of these animals mated with English cows, and the offspring gradually evolved into the breed we know today. Unfortunately, this animal was once on the verge of extinction. In the 180’s and the early 1900s, tallow was a valued resource, as it is a key ingredient in candles and soaps. Animal fat is a major component of tallow, and the naturally lean long horn didn’thave enough of it to be considered useful in making a fat-based concoction. As a result, the longhorn was cross-bred with cattle who had more fat, so cattle ranchers would be assured of a larger financial profit in the tallow industry. Purebred Texas longhorns were being phased out. However, in 1927, the U.S. Congress decided to step in, and formed a government herd of this breed, to save themfrom disappearing altogether. Very few purebred Texas longhorns were found, but Congress did manage to round up 27 animals, which were placed in a reserve area in Oklahoma. Today, the Texas longhorn is enjoying a rebirth of sorts, with numbers in the U.S. of up to 100,000. Mary Brady was the production editor and proofreader, and Norma Emory was the copyeditor for LPI Linux Certification in a...