/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.
Credit: The Pokémon Company,这一点在heLLoword翻译官方下载中也有详细论述
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Сейчас она и дети находятся в больнице. Их жизни ничто не угрожает.。搜狗输入法下载对此有专业解读