Benjamin Ste.in Pro

Add the following to your .ssh config file:

ControlMaster auto

ControlPath /tmp/ssh_mux_%h_%p_%r

Then, when you open up a second terminal to the same remote server, it will automatically reuse the existing connection and the new prompt will appear almost instantaneously. It doesn’t have to re-authenticate for every new window. Amazing.

If you also add

ControlPersist 4h

then the connection will stay open in the background. Super useful for things like git that re-establishes a connection on every operation. Dropped my `git pull` from 10 seconds on the first run to 2 seconds on the second.

via @malmckay