kalishot-suck/calisuck/HowTo.md

Howto

// You need python 3.5 at a minimum and initialize and activate a venv
python -m venv .
// Might need to activate the venv manually
. bin/activate
// Pre-reqs via pip 
pip install requests fire humanize langid iso639 beautifultable
// help commands
python calisuck.py --help
python calisuck.py index-ebooks --help
python calisuck.py download-ebooks --help
python calisuck.py download-covers --help

Where the hell do I find instances?

Shodan :

Apparently searching for "calibre" in shodan gives you thousands of results. Unfortunately you can't filtre without making an account. There has to be a way to automatically pull the URLs from Shodan but it's out of my current expertise.