10 Useful Awk Command Examples in Linux

This article covers a few awk commands and scripts.

Awk is a scripting language used for manipulating data and generating reports.

The awk command programming language requires no compiling, and allows the user to use variables, numeric functions, string functions, and logical operators. 

AWK Syntax: 

$ awk options 'selection _criteria {action }' input-file > output-file

Functions of AWK:

1. AWK Operations: 

(a) Scans a file line by line 

(b) Splits each input line into fields 

(c) Compares input line/fields to pattern 

(d) Performs action(s) on matched lines 

2. Useful For: 

(a) Transform data files 

(b) Produce formatted reports 

3. Programming Constructs: 

(a) Format output lines 

(b) Arithmetic and string operations 

(c) Conditionals and loops