The following are different ways to use awk:
- Syntax while using only pattern:
$ awk 'pattern' filename
- In this case, all the lines containing pattern will be printed.
- Syntax using only action:
$ awk '{action}' filename
- In this case, action will be applied to all lines.
- Syntax using pattern and action:
$ awk 'pattern {action}' filename
- In this case, action will be applied on all the lines containing pattern.
As seen previously, the awk instruction consists of patterns, actions, or a combination of both.
Actions will be enclosed in curly brackets. Actions can contain many statements separated by a semicolon or a newline.
awk commands can be on the command line or in the awk script file. The input lines could be received ...
