public function display()
	{
		$options = $this->_compileOptions();		
		$command = system('sudo fbi --noverbose ' .  $this->_compileOptions() . ' ' .$this->file . ' > /dev/null 2>&1');

		/**
		 * If $displayFor is set to 0, then the application doesn't need to be terminated. It's showing
		 * indefinetly. 
		 */
		if( $this->displayFor > 0 ) 
		{
			sleep($this->displayFor);
			$this->terminate();
		}
	}