As someone who has used a lot of shell over my career, I do love it as a utility and a programming paradigm. However the biggest issues I've had is that the co

As someone who has used a lot of shell over my career, I do love it as a utility and a programming paradigm. However the biggest issues I've had is that the code is really hard to test, error handling in shell isn't robust, and reusability with library type methods is not easy to organize or debug. Those are deal breakers for me when it comes to building any kind of non trivial system.