Ask HN: What AI Software Product/Software Do You Need?

I want something that will let me hook up the output of a llm to a bash terminal and put that terminal output right back into the bash terminal, maybe in a container. I would want to have another prompt that would be for instructing the llm on what its goal is. For example, make a script that prints out an ascii picture of a cat. The llm then gets to work on the bash terminal, using VI or whatever to bang out the script. The the supervisor llm would be able to ask questions or get additional input when it wanted to. I would want this to be sane and not awful to use. Points for free software. Big points for locally hosted.