You are working to create a new directory, and suddenly, the popular mkdir command returns an error.

您正在创建一个新目录，突然，流行的mkdir命令返回一个错误。

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When the file system gets mounted, it is initially empty, and the only valid operation in its root directory is to create new directories with the mkdir system call.

当文件系统挂载到系统中之后，它最初是空的，在其根目录中唯一有效的操作就是使用mkdir 系统调用创建一个新的目录。

youdao

When the file system gets mounted, it is initially empty, and the only valid operation in its root directory is to create new directories with the mkdir system call.

当文件系统挂载到系统中之后，它最初是空的，在其根目录中唯一有效的操作就是使用mkdir 系统调用创建一个新的目录。

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