TestParser

arg = { ... }

local function man(algo)
 for v in string.gmatch(algo, "%a") do
  if (v == "l") then turtle.turnLeft()
  elseif (v == "r") then turtle.turnRight()
  elseif (v == "f") then turtle.forward()
  elseif (v == "u") then turtle.up()
  elseif (v == "d") then turtle.down()
  elseif (v == "b") then turtle.back()
  elseif (v == "p") then print("lol")
  else print("Impossible algorithm.") return false
  end

 end

 return true
end

man(tostring(arg[1]))