$ rsync -avz -e --progress "/usr/bin/ssh -i /Users/local/if-any.pem" user@your-remote-server:/home/server/path/your-file.txt /Users/local/path/
or without *.pem
rsync -avz --progress user@your-remote-server:/var/www/ /Users/local/file.extension
$ rsync -avz -e --progress "/usr/bin/ssh -i /Users/local/if-any.pem" /Users/local/path/your-file.txt user@your-remote-server:/home/server/path/
or without *.pem
rsync -avz --progress /Users/local/file.extension root@your-remote-server:/var/www/