Ok this may be a little over the top but in my experience there’s a better way to learn bash: implement bash. I did this for a school project, along with job control, pipes, redirects, builtins. All of the trip ups mentionned in this article will become obvious.
This is good advice. Whenever I'm trying to recreate something that exists, I often run into what feels like forced decisions that make my reimplementation closer to the original. And then some seemingly random thing in the original becomes logical.
