Chapter 17 Advance gawk

In this chapter, we will learn how to use gawk in more detail than the basic usage of gawk discussed in the previous chapter.. 1. Using Variables One of the main functions is to save data using variables thrown by any program and to call it back and use it. awk supports the following two types of variables. Built-in variables User-defined variables Built-in variables As we saw in the previous chapter, you can refer to the recorded data by adding a dollar '$' sign followed by a number. Data fie...

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