gistfile1.js

//=========================================================================
// controller
//=========================================================================

  this.showOutput = function(req, res, params) {
    console.log('+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++');
    console.log(params);
    params['errorMessage'] = this.session.get('errorMessage');
    params['command'] = this.session.get('command');
    params['output'] = this.session.get('output');
    this.respond(params, {
      format: 'html'
      , template: 'app/views/main/index'
    });
  };

  this.handleCommand = function(req, res, params) {
    var self = this;
    child_process.exec(params['command-textbox'], function(err, output) {
      if (err) {
	// params['errorMessage'] = '\n\nInvalid command';
	// params['command'] = params['command-textbox'];
	// params['output'] = 'No output';
	self.session.set('errorMessage', params['\n\nInvalid command']);
	self.session.set('command', params['command-textbox']);
	self.session.set('output', params['No output']);
      } else {
	// params['command'] = params['command-textbox'];
	// params['output'] = output;
	self.session.set('command', params['command-textbox']);
	self.session.set('output', output);
      }

      // self.transfer('showOutput');
      self.redirect('/result');
    });
  };


//=========================================================================
// routes
//=========================================================================

router.get('/').to('Main.index');
router.get('/info').to('Main.info');
router.post('/').to('Main.handleCommand');
router.post('/submit').to('Main.handleCommand');
router.get('/result').to('Main.showOutput');

spec

Requirements:

1) start at Main.index action
2) enter command in the main index view
3) post to '/'
4) get redirected back to '/' while rendering the main index view, this time with the resulting output included