# File linkbot.rb, line 231
   def end_log(pattern=nil, input=nil)
     return "#{input} doesn't match #{pattern}" unless input =~ pattern
     $logger.close
     $logger == nil
     t = Time.now; y = t.year; m = t.month; d = t.day; h= t.hour; min = t.min; s = t.sec
     mins = sprintf("%02d", min)
     secs = sprintf("%02d", s)
     time = "#{y}/#{m}/#{d} #{h}:#{mins}:#{secs}"
     return "Okay I have stopped logging at #{time}."
   end