Stephen G. Kochan - Shell Programming in Unix, Linux and OS X

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Fourth Edition

Stephen G. Kochan
Patrick Wood

800 East 96th Street, Indianapolis, Indiana 46240

Shell Programming in Unix, Linux and OS X, Fourth Edition

Copyright 2017 by Pearson Education, Inc.

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, or otherwise, 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-13: 978-0-13-4449600-9

ISBN-10: 0-13-449600-0

Printed in the United States of America

First Printing: August 2016

The Library of Congress Control Number is on file.

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Stephen Kochan is the author or co-author of several best-selling titles on Unix and the C language, including Programming in C, Programming in Objective-C, Topics in C Programming, and Exploring the Unix System. He is a former software consultant for AT&T Bell Laboratories, where he developed and taught classes on Unix and C programming.

Patrick Wood is the CTO of the New Jersey location of Electronics for Imaging. He was a member of the technical staff at Bell Laboratories when he met Mr. Kochan in 1985. Together they founded Pipeline Associates, Inc., a Unix consulting firm, where he was vice president. They co-authored Exploring the Unix System, Unix System Security, Topics in C Programming, and Unix Shell Programming.

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Its no secret that the family of Unix and Unix-like operating systems has emerged over the last few decades as the most pervasive, most widely used group of operating systems in computing today. For programmers who have been using Unix for many years, this came as no surprise: The Unix system provides an elegant and efficient environment for program development. Thats exactly what Dennis Ritchie and Ken Thompson sought to create when they developed Unix at Bell Laboratories way back in the late 1960s.