How to automate SSH login with password?

Don't use a password. Generate a passphraseless SSH key and push it to your VM.

If you already have an SSH key, you can skip this step… Just hit Enter for the key and both passphrases:

$ ssh-keygen -t rsa -b 2048

Generating public/private rsa key pair.

Enter file in which to save the key (/home/username/.ssh/id_rsa): 

Enter passphrase (empty for no passphrase): 

Enter same passphrase again: 

Your identification has been saved in /home/username/.ssh/id_rsa.

Your public key has been saved in /home/username/.ssh/id_rsa.pub.

Copy your keys to the target server:

$ ssh-copy-id id@server

id@server's password: 

Now try logging into the machine, with ssh 'id@server', and check in:

.ssh/authorized_keys

to make sure we haven’t added extra keys that you weren’t expecting.

Finally check logging in…

$ ssh id@server



id@server:~$ 

You may also want to look into using ssh-agent if you want to try keeping your keys protected with a passphrase.

3 years ago

$ sudo apt-get install sshpass

$ sshpass -p your_password ssh user@hostname

3 years ago