Passwordless logins with SSH

Published: Wednesday, Dec 26, 2007 Last modified: Monday, Jul 15, 2024

If you routinely need to login to several machines, as I do, you will find this tip useful to automate the process. Thanks to Robot101 again!


In the previous version of my tip, I did not set a passphrase. Robot101 notes this is generally unwise and that it is better to put a passphrase on, and use ssh-agent. I believe him.

ssh -t theprocessyouwanttorun

Another nifty switch is the -v switch for verbose output ssh (thats fun).

DSA 1571-1 means that if you are Debian and have a key in use earlier than 13 May 2008. You must regenerate.