ComputerCraft Remote Turtle

local sender = 1

shell.run('clear')
rednet.open("left")
local function tryDown()
    while not turtle.down() do
        turtle.digDown()
        return "Dig Down"
    end
    return true
end
local function tryUp()
    while not turtle.up() do
        turtle.digUp()
        return "Dig Up"
    end
    return true
end
local function tryInspect()
    local obj, thing = turtle.inspect()
    if obj then return thing.name end
    return "Air"
end
local actions = {}
actions["forward"] = turtle.forward
actions["backward"] = turtle.back
actions["left"] = turtle.turnLeft
actions["right"] = turtle.turnRight
actions["up"] = tryUp
actions["down"] = tryDown
actions["dig"] = turtle.dig
actions["place"] = turtle.place
actions["inspect"] = tryInspect
while true do
    local action, senderID, text = os.pullEvent("rednet_message")
    if actions[text] then
        local a, b, c = actions[text]()
        rednet.send(1, a)
    end
end