protected function childProcessOptions($options)
    {
        // Process options
        if ($options['cwd']) {
            chdir($options['cwd']);
        }

        // User to be change
        if ($options['user']) {
            $this->childChangeUser($options['user']);
        }

        // Env set
        if ($options['env']) {
            $this->childChangeEnv($options['env']);
        }

        // Env set
        if ($options['timeout']) {
            $this->childSetTimeout($options['timeout']);
        }

        // Support callback
        if ($options['callback'] instanceof \Closure) {
            $options['callback']($this);
        }
    }