tailieunhanh - sed & awk, 2nd Edition

sed & awk describes two text manipulation programs that are mainstays of the UNIX programmer's toolbox. This edition covers the sed and awk programs as they are mandated by the POSIX standard and includes discussion of the GNU versions of these programs. | By Dale Dougherty Arnold Robbins ISBN 1-56592-225-5 432 pages. Second Edition March 1997. See the catalog page for this book. Index Symbols A B C D E F G H I K L M N O P Q R S T U V W X Y Table of Contents Preface Chapter 1 Power Tools f for Editing Chapter 2 Understanding Basic Operations Chapter 3 Understanding Regular Expression Syntax Chapter 4 Writing sed Scripts Chapter 5 Basic sed Commands Chapter 6 Advanced sed Commands Chapter 7 Writing Scripts f for awk Chapter 8 Conditionals Loops and Arrays Chapter 9 Functions Chapter 10 The Bottom Drawer Chapter 11 A Flock of awks Chapter 12 Full-Featured Applications Chapter 13 A Miscellany of Scripts Appendix A Quick Reference ffor sed Appendix B Quick Reference f for awk Appendix C Supplementffor Chapter 12 Copyright 2000 O Reilly QKFIN. All Rights Reserved. Preface NEXT Preface Contents Scope of This Handbook Availability of sed and awk Obtaining Example Source Code Conventions Used in This Handbook About the Second Edition Acknowledgments from the First Edition Comments and Questions This book is about a set of oddly named UNIX utilities sed and awk. These utilities have many things in common including the use of regular expressions for pattern matching. Since pattern matching is such an important part of their use this book explains UNIX regular expression syntax very thoroughly. Because there is a natural progression in learning from grep to sed to awk we will be covering all three programs although the focus is on sed and awk. Sed and awk are tools used by users programmers and system administrators - anyone working with text files. Sed so called because it is a stream editor is perfect for applying a series of edits to a number of files. Awk named after its developers Aho Weinberger and Kernighan is a programming language that permits easy manipulation of structured data and the generation of formatted reports. This book emphasizes the POSIX definition of awk. In addition the book briefly describes the .