Yes it runs on Linux, my laptop is running Manjaro and I installed it from the AUR. I’m not sure if the scripting is possible, there is an openAI compliant web API you can turn on so maybe possible through that, you would probably have to feed in the content of the site with the prompt though, I’m not sure there is a better way but I guess that sort of behaviour is a bit out of scope for GPT4All.
There is a local documents feature that allows it to access text files on your machine that you give it specific access to but I think it’s fairly limited in its ability.
I had no idea this had a name! When I was a small child we lived by the coast and my dad had a small yacht, one day I remember the keel lodged on a sandbar and he used the anchor to pull it free. Unfortunately we moved inland when I was 5 and dad sold the yacht.