Shulou(Shulou.com)06/01 Report--

Environment variables: named memory SPAC

When the system uses a name, such as LS, it looks for it according to the path of the PATH. After it is found, the record is recorded in the cache, and the next time you use it, you can directly recruit it in the cache.

You can use hash to view the powerful command records stored in the cache.

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