/etc is also writable, but it’s managed a bit differently. OSTree uses a technique called “etc overlay” to handle modifications in /etc. When an update is applied, OSTree compares files in the new version with those in /etc and applies changes intelligently, preserving local modifications as much as possible.
Strong community support，详情可参考旺商聊官方下载
Израиль нанес удар по Ирану09:28，推荐阅读WPS官方版本下载获取更多信息
Both TDT and CTC heads。爱思助手下载最新版本是该领域的重要参考