# File lib/earthquake/core.rb, line 207
    def store_history
      history_size = config[:history_size]
      File.open(File.join(config[:dir], 'history'), 'w') do |file|
        lines = Readline::HISTORY.to_a[([Readline::HISTORY.size - history_size, 0].max)..-1]
        file.print(lines.join("\n"))
      end
    end