// 'view' should now be detached and unusable
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.
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△采用中科第五纪“具身大脑”的宇树机器人正在展示工业场景的搬运工作，图片：采访人提供
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