sed & awk 2nd editon

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英文版的sed & awk 2nd editon，在网上找到最好的版本了。

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 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 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 for sed
Appendix B: Quick Reference for awk
Appendix C: Supplement for Chapter 12
Copyright © 2000 O'Reilly & QKFIN. All Rights Reserved.

Chapter 1, Power Tools for Editing, is an overview of the features and capabilities of sed and awk. 
Chapter 2, Understanding Basic Operations, demonstrates the basic operations of sed and awk, showing 
a progression in functionality from sed to awk. Both share a similar command-line syntax, accepting 
user instructions in the form of a script.
Chapter 3, Understanding Regular Expression Syntax, describes UNIX regular expression syntax in full 
detail. New users are often intimidated by these strange expressions, used for pattern matching. It is 
important to master regular expression syntax to get the most from sed and awk. The pattern-matching 
examples in this chapter largely rely on grep and egrep.
Chapter 4, Writing sed Scripts, begins a three-chapter section on sed. This chapter covers the basic 
elements of writing a sed script using only a few sed commands. It also presents a shell script that 
simplifies invoking sed scripts.
Chapter 5, Basic sed Commands, and Chapter 6, Advanced sed Commands, divide the sed command set 
into basic and advanced commands. The basic commands are commands that parallel manual editing 
actions, while the advanced commands introduce simple programming capabilities. Among the 
advanced commands are those that manipulate the hold space, a set-aside temporary buffer.
Chapter 7, Writing Scripts for awk, begins a five-chapter section on awk. This chapter presents the 
primary features of this scripting language. A number of scripts are explained, including one that 
modifies the output of the ls command.
Chapter 8, Conditionals, Loops, and Arrays, describes how to use common programming constructs 
such as conditionals, loops, and arrays.
Chapter 9, Functions, describes how to use awk's built-in functions as well as how to write user-defined 
functions.
Chapter 10, The Bottom Drawer, covers a set of miscellaneous awk topics. It describes how to execute 
UNIX commands from an awk script and how to direct output to files and pipes. It then offers some 
(meager) advice on debugging awk scripts.
Chapter 11, A Flock of awks, describes the original V7 version of awk, the current Bell Labs awk, GNU 
awk (gawk) from the Free Software Foundation, and mawk, by Michael Brennan. The latter three all 
have freely available source code. This chapter also describes two commercial implementations, MKS 
awk and Thomson Automation awk (tawk), as well as VSAwk, which brings awk-like capabilities to 
the Visual Basic environment.
Chapter 12, Full-Featured Applications, presents two longer, more complex awk scripts that together 
demonstrate nearly all the features of the language. The first script is an interactive spelling checker. The 