# File lib/thin/daemonizing.rb, line 116
      def send_signal(signal, pid_file)
        if File.exist?(pid_file) && pid = open(pid_file).read
          pid = pid.to_i
          print "Sending #{signal} signal to process #{pid} ... "
          Process.kill(signal, pid)
          puts
          pid
        else
          puts "Can't stop process, no PID found in #{pid_file}"
          nil
        end
      rescue Errno::ESRCH # No such process
        puts "process not found!"
        nil
      end