/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.
answering, and text completion。关于这个话题，safew官方版本下载提供了深入分析
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Nepal is a young democracy. It became a republic in 2008, after a civil war that killed more than 17,000 people and lasted 10 years.