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Since you mentioned you have zero idea how awk works - get the book "Effective AWK Programming", 5th Edition, by Arnold Robbins and it will teach you how to use AWK. The most important thing for you to understand given the command you posted, though, is this: awk is not shell. Awk and shell are 2 completely different tools with completely different purposes and their own syntax, semantics, and scope. Awk is a tool for manipulating text while shell is a tool for creating/destroying files and processes and sequencing calls to tools. Awk is the tool that the people who invented shell also invented for shell to call when necessary to manipulate text.

This shell script might be what you're trying to do: