A lot of languages/systems require to memorize rules. And a basic understanding on how the shell works help understanding those rules. They aren't just magic in

A lot of languages/systems require to memorize rules. And a basic understanding on how the shell works help understanding those rules. They aren't just magic incantation. As an older programmer, I've noticed that the unix shell is one of these few tools that I learned when I was a teenager that is still relevant and useful today (and unavoidable, even if you don't like it). So understanding it was (and still is) a good investment.