# File lib/picnic/service_control.rb, line 214
    def stop
      if File.exists? @options[:pid_file]
        pid = open(@options[:pid_file]).read.to_i
        begin
          Process.kill("TERM", pid)
          exit 0
        rescue Errno::ESRCH
          $stderr.puts "#{app} process '#{pid}' does not exist."
          exit 1
        end
      else
        $stderr.puts "#{@options[:pid_file]} not found.  Is #{app} running?"
        exit 4
      end
    end