os.loadAPI("/apis/sane")

local dir = {

["forward"] = turtle.forward,

["back"] = turtle.back,

["up"] = turtle.up,

["down"] = turtle.down,

["home"] = function ()

sane.goHome()

sane.face(0)

end

}

local function keys (t)

local keys = {}

for k, v in pairs(t) do

keys[#keys + 1] = k

end

return keys

end

local args = {...}

if dir[args[1]] then

for i = 1, args[2] or 1 do

dir[args[1]]()

end

else

print("No such direction: ", args[1])

term.write("Try: ")

print(table.concat(keys(dir), ", "))

end