SSH Keyless Login
$ ssh -keygen -t rsa
Accept default file name and don’t set a pass phrase if you don’t need one.
$ ls .ssh
$ cat .ssh/id_rsa.pub
Then Login via ssh
$ ssh user@www.example.com
$ nano .ssh/authorized_keys
Add the key copied from id_rsa.pub to authorised_keys on a new line.
CTRL + O to save
CTRL + X to exit nano
$ logout
Then try going to ssh again to login and it should auto login without asking for a password
$ ssh www.example.com