([r -] [w -] [x -]) {3} — permissions (use. To match the first character, because it can be any of several different special characters.)

([r -] [w -] [x -]){3}—权限(使用.匹配第一个字符，因为它可能是几个不同的特殊字符中的任何一个。)

youdao

The permissions are read (r), write (w), and execute (x).

这些权限就是读（r），写（w）和执行（x）。

youdao

The three values, respectively, indicate whether the user, group, or everyone has read (r), write (w), or execute (x) permission.

这三个值分别表示用户、组、组成员是否拥有读 (r)、写 (w) 或 (x) 执行权限。

youdao

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