I would argue that the strict posix shell (with all its limitations) can be learnt in an afternoon or two and a lot of it will be also useful in general in the

I would argue that the strict posix shell (with all its limitations) can be learnt in an afternoon or two and a lot of it will be also useful in general in the OS. like utilities and their inputs and outputs. it's mostly reusing/duct taping existing programs, so it's not a vacuum like a DSL. I hope it has excellent man pages to be usable. the BSDs have...