This is the normal rsync command, assuming your are using port 2222 for the SSH port :
rsync -avz -e “ssh -p 2222” /local_folder email@example.com:/remote_folder
However, this will require you to fill in the password. If the remote server is trusted, just create the key pair.
Enter file in which to save the key (/user/.ssh/id_rsa): put_any_name_here
Enter passphrase (empty for no passphrase): (just press enter)
Enter same passphrase again: (just press enter)
Your identification has been saved in put_any_name_here
Your public key has been saved in put_any_name_here.pub.
Copy the key to remote server :
ssh-copy-id -p 2424 -i /user/.ssh/put_any_name_here.pub xx.xx.xx.xx
The key is now copied and you may log in to the remote server without using password anymore
ssh -p 2222 18.104.22.168
Schedule the rsync in a cronjob, that’s all 🙂