How can I verify if a ssh public key is successfully installed on a Ubuntu server? I'm trying to unable continuos deployment and to do so I need to install the public key I got from codeship on the server.

I have copied the key I got on the server at ~/.ssh/authorized_keys/id_rsa.pub and restarted ssh but I'm still not able to deploy my app so as first debugging step I'd like to make sure the public key is properly installed on the server.

Thanks.