See I think that there are at least two possible companion pieces to this article that I'd love to read. There are a lot of things in bash that aren't necessar

See I think that there are at least two possible companion pieces to this article that I'd love to read. There are a lot of things in bash that aren't necessarily obviously useful to the novice bash programmer but become more important when you spend some time writing things, like $? for tests Common use cases for some of the peculiar bash features with examples historical explanation of how features developed were originally used