重新扫描文件系统
Re-scan the file system
以上为机器翻译结果，长、整句建议使用 人工翻译 。
如果任何事超出同步，这使重新开始计算机非常快速的因为作业系统没有扫描整个的文件系统发现。
This makes restarting the computer much faster, as the operating system doesn't have to scan the entire file system to find out if anything is out of sync.
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