Awk Programming

The objective of this course is to develop the programming skills required to write applications using the awk programming language.

Audience: Unix system application developers, administrators, and advanced users.

Prerequisites: The ability to write programs in a high level language (such as C or shell) is very helpful in completing the lab exercises and understanding the lectures. A good working knowledge of the UNIX environment is necessary.

Introduction to awk

What is awk and Why?
How awk Programs Work
Running awk Programs
Examples

Awk Patterns

Summary and Patterns
BEGIN and END
Expressions
String-Matching Patterns
Extended REs in awk
Range Patterns

Awk Actions

Summary of Statements
Expressions
Operators
Flow Control
More Flow Control
The next, break, continue, and exit statements
Built-in Variables

Awk Input andOutput

Formatted Output with printf
Output into Files
Output into Pipes
Input Separators
Multi-Line Records
The getline Function
More getline
Command Line Parameters

Awk Functions

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

Awk 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