Emacs / CVS / OpenSSH: preventing password popup

Question

I\'m using GNU Emacs on my Ubuntu netbook in fullscreen mode. When I edit files that are under version control and hit C-x v v to commit the latest changes, an OpenSSH popup

Answer 1

You can get ssh to multiplex all new connections to a server through existing connections. This means that as long as you have opened an ssh connection (say in a shell) new ones to the same remote host will not ask for a password. I use

Host *
    ControlPath ~/.ssh/master-%r@%h:%p
    ControlMaster auto
    ServerAliveInterval 30

in ~/.ssh/config to set this up.