TankStatus

tank = peripheral.wrap('back')

function printTankInfo()
    tankInfo = tank.getTankInfo()
    contents = tankInfo[1].contents

    print('Capacity: '..tankInfo[1].capacity)
    if contents then
        print('Name:'..contents.name)
        print('Raw Name: '..contents.rawName)
        print('Amount: '..contents.amount)
    else
        print('The tank is empty.')
    end
end

printTankInfo()