Remember, this script only have access to sites that the user, running the script, has access to. So, if you run this as a backup user, that backup users has to be created on the host too, and have a valid SSH key uploaded.
Run ./aberdeen.php to start the backup process for Aberdeen Cloud sites.
This will download the files and DB to the machine where the script is executed.
Run ./platform.php to start the backup process for Platform.sh sites. This
will backup the sites on Platform.sh' servers.