I've had genuinely valuable interactions using both bash and javascript, and also some configuration languages for major systems (various forms of yaml, etc).

I've had genuinely valuable interactions using both bash and javascript, and also some configuration languages for major systems (various forms of yaml, etc). It probably just has far less information on Elixir and Rust in its corpus. It's actually pretty good at understanding the commonly used tools to do a job and which command switches you should use. E.g. ask it to write a script to create slowed tempo versions of a piece of music at 70%, 80% and 90%, it'll probably come up with some bash that runs sox and does a solid job of the requirement without you needing to work out which tool to use and what its parameters are.