To get the greatest speeds from AirDrop it is usually best to disconnect from the wireless network and take advantage of the peer-to-peer nature of AirDrop. This can be achieved by either deleting the network from Network Preferences, which is not convenient at all, or by using the airport utility.
Instructions for installing fuse based sshfs (ssh file system) on Debian based distros.
A ‘super user’ in this context is set up for convenience and has full access to everything, the same as the MySQL root account.
Instructions for installing MySQL and some helpers.