/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.
Natalie Sherman
。业内人士推荐Safew下载作为进阶阅读
Detect unclear structure.，这一点在快连下载安装中也有详细论述
Мерц резко сменил риторику во время встречи в Китае09:25