old_contents: #!/usr/bin/env python
  # log event for arduino yun RouterReset
  
  from datetime import datetime, timedelta
  import os
  import sys
  
  # function to log time/event
  def logEvent (directory):
      now = datetime.today()
  
      # command-line argument: status (startup/on/off)
      status = sys.argv[1] if len(sys.argv)>1 else 'startup'
  
      logfile = os.path.join(directory, now.strftime('log_%Y-%m.txt'))
      lastlog_file = os.path.join(directory, '.lastlog.txt')
      lastlog_status = status # default: no change
  
      if os.path.exists(lastlog_file):
          lastlog = open(lastlog_file).readlines()
          lastlog_time = datetime.strptime(lastlog[0].strip(), '%Y-%m-%d %H:%M:%S')
          lastlog_status = lastlog[1].strip()
  
      # does log file exist?
      logfile_not_new = os.path.exists(logfile)
  
      # add to log
      with open(logfile, 'at') as f:
          output = '%-10s %-8s %-7s' % (now.strftime('%Y-%m-%d'),
                                      now.strftime('%H:%M:%S'), status)
          if (status != 'startup' and status != lastlog_status):
              output += (' (was %-3s ' % lastlog_status +
                         strfdelta(now - lastlog_time)) + ')'
          f.write(output + '\n')
  
      # update 'last log'
      if status != 'startup' and (not os.path.exists(lastlog_file) or status != lastlog_status):
          with open(lastlog_file, 'wt') as f:
              f.write(now.strftime('%Y-%m-%d %H:%M:%S') + '\n')
              f.write(status + '\n')
      if status == 'startup' and os.path.exists(lastlog_file):
          os.remove(lastlog_file)
  
      # if it was a new log file, re-build web page:
      if not logfile_not_new:
          print 'rebuild web'
  
  
  # function for formatting change in time
  def strfdelta(tdelta):
      hours, rem = divmod(tdelta.seconds, 3600)
      hours += tdelta.days * 24
      minutes, seconds = divmod(rem, 60)
      return("%d:%02d:%02d" % (hours, minutes, seconds))
  
  if __name__ == '__main__':
      logEvent('test')
  
new_contents: #!/usr/bin/env python
  # log event for arduino yun RouterReset
  
  from datetime import datetime, timedelta
  import os
  import sys
  import updateWeb
  
  # function to log time/event
  def logEvent (directory):
      now = datetime.today()
  
      # command-line argument: status (startup/on/off)
      status = sys.argv[1] if len(sys.argv)>1 else 'startup'
  
      logfile = os.path.join(directory, now.strftime('log_%Y-%m.txt'))
      lastlog_file = os.path.join(directory, '.lastlog.txt')
      lastlog_status = status # default: no change
  
      if os.path.exists(lastlog_file):
          lastlog = open(lastlog_file).readlines()
          lastlog_time = datetime.strptime(lastlog[0].strip(), '%Y-%m-%d %H:%M:%S')
          lastlog_status = lastlog[1].strip()
  
      # does log file exist?
      logfile_not_new = os.path.exists(logfile)
  
      # add to log
      with open(logfile, 'at') as f:
          output = '%-10s %-8s %-7s' % (now.strftime('%Y-%m-%d'),
                                      now.strftime('%H:%M:%S'), status)
          if (status != 'startup' and status != lastlog_status):
              output += (' (was %-3s ' % lastlog_status +
                         strfdelta(now - lastlog_time)) + ')'
          f.write(output + '\n')
  
      # update 'last log'
      if status != 'startup' and (not os.path.exists(lastlog_file) or status != lastlog_status):
          with open(lastlog_file, 'wt') as f:
              f.write(now.strftime('%Y-%m-%d %H:%M:%S') + '\n')
              f.write(status + '\n')
      if status == 'startup' and os.path.exists(lastlog_file):
          os.remove(lastlog_file)
  
      # if it was a new log file, re-build web page:
      if not logfile_not_new:
          updateWeb.updateWeb(directory)
  
  
  # function for formatting change in time
  def strfdelta(tdelta):
      hours, rem = divmod(tdelta.seconds, 3600)
      hours += tdelta.days * 24
      minutes, seconds = divmod(rem, 60)
      return("%d:%02d:%02d" % (hours, minutes, seconds))
  
  if __name__ == '__main__':
      logEvent('/mnt/sd/arduino/www')
  
subject: call updateWeb when needed