/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.
Анна Габай (Редактор отдела «Силовые структуры»)
。关于这个话题，一键获取谷歌浏览器下载提供了深入分析
I tested the best Kindles to help you find the perfect e-reader
// ⚠️ 易错点4：循环条件写right = 0（会导致right-1越界），或把<=写成<（漏判相等的有序情况）