cat ~/.ssh/id_rsa.pub | ssh USER@HOST "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
Instead of using a ready-to-use audit script, this one is more informative and in-depth
Lots of good stuff here
A very detailed post on finding the largest directories and files in linux. I like how the author has enumerated all possible options.
Yet another list of wordlists and passwords. Good for bruteforcing
Wordlists and passwords. Pretty important stuff.
I think it's a better option than /tmp, if you are not super concerned about file persistence.
python -m SimpleHTTPServer 8080
A very detailed article on how and what attackers do on compromised linux boxes.