tmux is a life saver

Ever had an SSH session disconnect, interrupting an important process you were running. No more with tmux! If you haven’t heard of it, tmux creates detachable shell instances that will keep running even if you disconnect from the SSH session. And when you re-attach to those sessions, it will be like you were sitting there watching it the whole time — all the standard output that happened while you were away will be right there waiting on you. For the essentials you need to get started with tmux, see this post by Daniel Miessler.