awk system

AWK is a programming language and a command-line tool commonly used for text processing and data manipulation. The `system` function in AWK is used to execute shell commands or external programs from within an AWK script. It allows you to interact with the operating system and perform tasks that are not directly supported by AWK itself.

For example, you can use the `system` function to run shell commands like this:

awk 'BEGIN { system("ls -l") }'

In this example, the `system` function is used to execute the `ls -l` command, which lists the files and directories in the current directory. The output of the command will be displayed in the terminal.

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