That is where BPatterns come in:
Фото: Станислав Трифонов / «Лента.ру»
，更多细节参见51吃瓜
But of course, like any immutable system, there are mutable parts (otherwise, we couldn’t create any configuration files). OSTree handles this with “overlays” (actually, we use OverlayFS) that allow a read-write filesystem to be layered on top of the immutable system. For example, the /etc and /var directories are writable, while the rest of the system is read-only.
HTMLMediaElement.prototype,