public boolean execute(
        CommandInterpreter interpreter, CommandLine commandLine, boolean batchMode) {
      final String machineName = commandLine.getOptionValue('n');
      final int localJobId = Integer.parseInt(commandLine.getOptionValue('j'));
      final boolean singleOnly = commandLine.hasOption('1');

      String message = "sending " + jobCommand + " to " + machineName + ":" + localJobId;
      if (singleOnly) message = message + " (single)";
      interpreter.showMessage(message, batchMode);

      Response[] responses = null;
      try {
        responses = sendJobCommand(jobCommand, machineName, localJobId, singleOnly);
      } catch (ClusterException e) {
        throw new IllegalStateException(e);
      }

      interpreter.showMessage("Received " + responses.length + " responses:", batchMode);
      for (Response response : responses) {
        String responseMessage = null;
        if (response instanceof BooleanResponse) {
          final BooleanResponse bresponse = (BooleanResponse) response;
          responseMessage = bresponse.getNodeName() + ": " + bresponse.getValue();
        } else {
          responseMessage = response.toString();
        }
        interpreter.showMessage(responseMessage, batchMode);
      }

      return true;
    }
    public boolean execute(
        CommandInterpreter interpreter, CommandLine commandLine, boolean batchMode) {
      final String groupName = commandLine.getOptionValue('g', ClusterDefinition.ALL_NODES_GROUP);

      final String message = "Requesting jobs from group '" + groupName + "'...";
      interpreter.showMessage(message, batchMode);

      Response[] responses = null;
      try {
        responses = console.sendMessageToNodes(new GetJobsMessage(), groupName, 5000, false);
      } catch (ClusterException e) {
        throw new IllegalStateException(e);
      }

      interpreter.showMessage("Received " + responses.length + " responses:", batchMode);
      for (Response response : responses) {
        interpreter.showMessage(response.toString(), batchMode);
      }

      return true;
    }