ssh append authorized_keys on remote server

This is how to copy local ssh public key and append it to authorized_keys file on remote server

cat ~/.ssh/id_rsa.pub | ssh user@server "cat >> ~/.ssh/authorized_keys"

This commands consists of three (3) parts

1. First copy content of ids_rsa.pub file
2. Then pipe it to ssh. Connect to remote server with yout credentials
3. And execute append command on remote server