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.
粮食安全是“国之大者”，农业农村部2025年承办的建议提案中有151件与之相关。代表委员们从科技赋能、单产提升、政策支持等方面提出意见建议。“我们认真采纳吸收，实施新一轮千亿斤粮食产能提升行动，主攻单产和品质提升。”陶怀颖说，2025年我国粮食产量达到14298亿斤。
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