SSH logins without password

Nothing new, just a little note to self about how easy this is:

1. Generate your key pair (once):
   > ssh-keygen [Enter] [Enter] [Enter]
2. Transfer the public key to remote ssh hosts (once per host)
   > ssh-copy-id user@remote-host
3. And then just do this (every time you want to log in)
   > ssh user@remote-host