At work I usually feed Copilot the relevant documentation, f.e. a 700 page pdf with the commands for a L3 Network Switch and then ask it to help me find the relevant commands and tell me which pages to read. It digests those 700 pages a lot faster than me and usually point me to the correct commands.

As a hobbyist, I'd say that LLMs are usually good at the basics. Once you get into unusual and very specific situations (or the context gets too big), they can get weird, but they're often surprisingly good sparring partners in those cases as well.

Then again, what I might consider unusual, might not be so unusual to an expert.

Listen, I'm not trying to do crazy things. When I asked it to compile a package with AVX2 it gave me the right command. I asked it to verify and it fed the file into readelf and found the vextracti128， vpand, vpxor instructions, verifying it was compiled with AVX2