V2EX = way to explore
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This topic created in 3902 days ago, the information mentioned may be changed or developed.
昨天 Time Machine 突然把 /Applications 之下的许多 app 重新备份了一遍。找出若干打开包逐个目录检查，并没发现改动的迹象。既然没有改动为什么会重新备份呢？
附图：
https://pikachu.blog.ustc.edu.cn/wp-content/uploads/2015/08/屏幕快照-2015-08-25-01.09.31.png
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