通过使用 **/，还可以搜索子目录；该过程是递归的，例如 find 命令，以便您能产生 find 命令的等效结果，例如 $ find . -name "*.c"。

Subdirectories can also be searched by using **/; the process is recursive, such as the find command, so that you can produce the equivalent of a find command, such as $ find . -name "*.c".

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