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7. Patterns, Actions, and Variables
As you have already seen, each awk statement consists of
a pattern with an associated action. This chapter describes how
you build patterns and actions, what kinds of things you can do within
actions, and awk’s built-in variables.
The pattern-action rules and the statements available for use
within actions form the core of awk programming.
In a sense, everything covered
up to here has been the foundation
that programs are built on top of. Now it’s time to start
building something useful.
| 7.1 Pattern Elements | What goes into a pattern. | |
| 7.2 Using Shell Variables in Programs | How to use shell variables with awk.
| |
| 7.3 Actions | What goes into an action. | |
| 7.4 Control Statements in Actions | Describes the various control statements in detail. | |
| 7.5 Built-in Variables | Summarizes the built-in variables. |