You can get them to talk through the problem, build parts, test things, etc.
Also, this is a horrible problem to solve with awkward tools. Why is your code file to large to cat???
Anyways posting this here isn't to get this particular problem solved. It is to see if there is a prompt that can solve it. And this is the only problem I found it not able to solve. It's not like it doesn't know about sed/awk/grep or other Linux tools, it is an expert on most of the common options involving them. My guess is there is something going on with this prompt that just breaks it's 'though patterns' for the lack of a better word :)
These are command line tools though, not piping it into the llm.
My point though was more about giving it space to reason. It's very important for good results on more complex tasks.