Generating a ephemeral Tor control cookie?

Is there a way to generate or rather recreate a new Tor control cookie every boot on unix/linux systems?

Would simply pointing the CookieAuthFile to tmp given its mounted to tmpfs be enough?

CookieAuthFile /tmp/tor_cookie/control_auth_cookie

For those wondering I set Tor control cookie so I can see connections with the gui onion-circuits package on debian. Any other tips for securing the tor control cookie would be greatly appreciated.