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What is the usage cycle in awk? I believe many inexperienced people don't know what to do about it. Therefore, this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

The guided awk script has three main parts: the BEGIN and END functions (both optional), and the functions that the user writes to execute each time. To some extent, the body of the awk is a loop because the commands in the function are executed once for each record. However, sometimes you want to execute multiple commands on a single record, so you need to use a loop.

Let's learn about different types of loops that execute the same command multiple times.

The awk script has three main parts: the BEGIN and END functions (both optional), and the functions that the user writes to execute each time. To some extent, the body of the awk is a loop because the commands in the function are executed once for each record. However, sometimes you want to execute multiple commands on a single record, so you need to use a loop.

There are many types of loops that are suitable for different scenarios.

While cycle

A while loop detects an expression and executes the command if the expression is true. When the expression changes to false, the loop breaks.

#! / bin/awk-f BEGIN {# Loop through 1 to 10 iTunes 1; while (I

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