S.T.U.P.I.D.

function updateProgram(pastebinCode, programFile, isLua)
    local response = http.get("https://pastebin.com/raw/" .. pastebinCode)
    if isLua == "lua" then
        programFile = programFile .. ".lua"
    end
    if response then
      local programCode = response.readAll()
      response.close()
      local file = fs.open(programFile, "w")
      file.write(programCode)
      file.close()
      print("Program updated successfully!")
    else
      print("Failed to update program.")
    end
  end

  -- Main program
  local args = {...}
  local isLua = args[3]
  local programToUpdate = args[1]
  local pastebinCode = args[2]

  print("Note: to update a program ending in .lua please add the extra argument 'lua' when using this program")
  print("otherwise there will be a new program NOT ending in .lua")
  print("Example: update example.lua AbCd1234 lua")
  print("Updating " .. programToUpdate .. "...")

  updateProgram(pastebinCode, programToUpdate, isLua)