protected function _executeStringRemotely($commandString, Garp_Shell_RemoteSession $session) {
        if (!($stream = ssh2_exec($session->getSshSession(), $commandString))) {
            return false;
        }
    
        stream_set_blocking($stream, true);
        $content = stream_get_contents($stream);        
        $this->_bubbleSshErrors($stream, $commandString);
        fclose($stream);

        return $content;
    }