Tips 

ssh -J jump target
SSH to a target host via a jump host 
find . -type f -print0 | xargs -0 <command>
Use a listing of files from find together with xargs

In Emacs: Ctrl + x, Ctrl + f
/ssh:user@host:filename
Edit a file on a remote server that doesn't have an editor installed 
ssh-keygen -R <hostname>
ssh-keyscan -H <hostname> >> ~/.ssh/known_hosts
Be able to SSH into machine without warning about fingerprint

Ctrl-x, Ctrl-e in Bash
Open up the current line in an editor and execute it when finished editing 
xauth add $(xauth -f ~${user}/.Xauthority list | tail -1)
Run X11 programs as another user 
alias sudo='sudo '
Run aliases with sudo