text: import time
  
  """ Method to create backup log in .stackby file """
  def backup(source, destination, filename):
    try:
      fh = open(source+'/.stackby','a+')
      fh.write(str(time.time())+" "+source+" "+destination+" "+filename+"\n")
      fh.close()
    except IOError:
      print("IO Error : Unable to write to backup file")
      fh.close()
    return