Answered by : xanthous-xenomorph-ddm6jdnm9py8

cat ~/.ssh/id_rsa.pub | ssh <user>@<hostname> 'cat >> .ssh/authorized_keys && echo "Public key successfully copied"'

Source : https://ilikekillnerds.com/2015/08/copying-your-local-ssh-public-key-to-a-remote-machineserver-in-mac-os/ | Last Update : Mon, 14 Dec 20