How to transfer your identity.pub to the remote machine’s authorized_keys?
Answer:
While you can ssh into the remote machine and edit the authorized_keys file, it is easier with the following command.
# ssh-copy-id -i identity-rsa-dsa.pub user@remote-server
[...] will be prompted to login if you don't have proper ssh key in the remote server, and after finishing editing the file, you will quit the ssh session [...]