text: """
  How to use:
  python sample_command_line.py -device 'HOST' -user 'SSH_USER_NAME' -password 'SSH_USER_PASSWORD' -command 'COMMAND'
  """
  
  from lxml import etree
  from jnpr.junos import Device
  from jnpr.junos.utils.config import Config
  import argparse
  
  parser = argparse.ArgumentParser()
  parser.add_argument('-device', help='Input host', type=str)
  parser.add_argument('-user', help='Input user name', type=str)
  parser.add_argument('-password', help='Input password', type=str)
  parser.add_argument('-command', help='Input command', type=str)
  args, unknown = parser.parse_known_args()
  
  device = args.device
  user = args.user
  password = args.password
  command = args.command
  
  open_result = None
  
  try:
  
      dev = Device(host=device, user=user, password=password, gather_facts=False)
      open_result = dev.open()
      print("Open connection ... {}".format(open_result.connected))
  
      conf = Config(dev)
      print("Load config  ...")
  
      lock_response = conf.lock()
      print("Locking config ... {}".format(lock_response))
  
      rollback_response = conf.rollback()
      print("Rollback config ... {}".format(rollback_response))
  
      load_result = conf.load(command, format='set', ignore_warning=['statement not found'])
      load_result_tostring = etree.tostring(load_result, encoding='unicode', pretty_print=True)
      print("Load command ... \n{}".format(load_result_tostring))
  
      commit_check_result = conf.commit_check()
      print("Check result ... {}".format(commit_check_result))
  
      commit_result = conf.commit()
      print("Commit  ... {}".format(commit_result))
  
      unlock_response = conf.unlock()
      print("Unlocking config ... {}".format(unlock_response))
  
      close_response = dev.close()
      print("Close connection ... {}".format("Success" if not open_result.connected else "Failed"))
  
      print ("DONE")
  
  except Exception, e:
  
      print(e)
  
      if open_result is not None:
          close_response = dev.close()
          print("Closed connection? {}".format(not open_result.connected))
  