Chapter 11. The awk Programming Language
The awk programming language is often used for text and string manipulation within shell scripts, particularly when input data can be viewed as records and fields. However, it is also an elegant and capable programming language that allows you to accomplish a lot with very little work.
This chapter presents the following topics:
Conceptual overview
Command-line syntax
Patterns and actions
Built-in variables
Operators
Variables and array assignment
User-defined functions
gawk-specific facilities
Implementation limits
Group listing of awk functions and commands
Alphabetical summary of awk functions and commands
Source code
For more information, see sed & awk and Effective awk Programming, listed in the Bibliography.
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