SSH With A Specific Key

When you SSH into another machine using public key authentication, the key pair from either ~/.ssh/id_dsa, ~/.ssh/id_ecdsa, or ~/.ssh/id_rsa is used by default. This is generally what you want. But what if the target server is expecting to identify you with a different SSH key pair?

The -i option can be used with ssh to specify a different identity file when the default isn't what you want.