# File lib/heroku/commands/app.rb, line 253
      def console_history_read(app)
        history = File.read(console_history_file(app)).split("\n")
        if history.size > 50
          history = history[(history.size - 51),(history.size - 1)]
          File.open(console_history_file(app), "w") { |f| f.puts history.join("\n") }
        end
        history.each { |cmd| Readline::HISTORY.push(cmd) }
      rescue Errno::ENOENT
      rescue Exception => ex
        display "Error reading your console history: #{ex.message}"
        if confirm("Would you like to clear it? (y/N):")
          FileUtils.rm(console_history_file(app)) rescue nil
        end
      end