awk Programming

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1. Course Introduction

Course Objectives Course Overview

Using the Workbook Suggested References

2. Introduction to awk

Introduction to awk

How awk Programs Work Running awk Programs Examples

3. Patterns

Summary and Patterns BEGIN and END Expressions

String-Matching Patterns Extended REs in awk Range Patterns

4. Actions

awk Actions Expressions Operators

Flow Control

More Flow Control

The next, break, continue, and exit statements Built-in Variables

More getline

Passing Parameters into a Script

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6. Functions

Built-In Arithmetic Functions Built-In String Functions More String Functions User Defined Functions Local Variables

7. Arrays

Arrays

Associative Arrays

The Array for Statement The Array in Operator

Deleting Array Elements The Split Function

Multi-Dimensional Arrays

Command Line Parameter Passing

8. Appendix – Regular Expressions

Introduction

What is Regular Expression?

Literal Regular Expressions: ^, $, \ Regular Expressions: ., [s] More about [s]

Regular Expressions: * More about *

Regular Expressions: {m,n}

9. Input andOutput

Formatted Output with printf Output into Files Output into Pipes Input Separators

Multi-Line Records The getline Function