savings

do
  load_one = function(command)
      if fs.exists(command) then
        local fileHandler = fs.open(command, 'r')
        a = textutils.unserialize(fileHandler.readAll())
        fileHandler.close()
      end
      return a
  end

  save_one = function(command1, command2)
      local fileHandler = fs.open(command1, 'w')
      fileHandler.write(textutils.serialize(command2))
      fileHandler.close()
      log_add("Saving: "..command1)
  end

  load_all = function()
      log_add("Load all")
      names = load_one("names")
      ids = load_one("ids")
      status = load_one("status")
      relays = load_one("relays")
      log_add("Load successful")
  end

  save_all = function()
      log_add("Save all")
      save_one("names", names)
      save_one("ids", ids)
      save_one("status", status)
      save_one("relays", relays)
      log_add("Save successful")
  end
end