ssh password in command line code example

Example 1: ssh without password

a@A:~> cat .ssh/id_rsa.pub | ssh b@B 'cat >> .ssh/authorized_keys'
b@B's password:

Example 2: login to ssh with password

ssh -o PasswordAuthentication=yes user@hostname

Example 3: ssh user password example

sshpass -p 'YourPassword' ssh user@host