add 'file' to the list of potentially useful commands
add 'file' to the list of potentially useful commands

OverTheWireOrg/OverTheWire-website,OverTheWireOrg/OverTheWire-website,OverTheWireOrg/OverTheWire-website,OverTheWireOrg/OverTheWire-website,OverTheWireOrg/OverTheWire-website