Once you have made the changes to the XML document in memory, a single function call writes it back out to the configuration file.

在对内存中的XML文档完成了相应的修改之后，只需使用一个函数调用就可以将其写回到对应的配置文件中。

youdao

Besides saving you another system call, this non-portable extension saves you an expensive trip back to the file system for more metadata.

除了减少另外的系统调用之外，这种不可移植的扩展还减少了从文件系统获取更多元数据的开销非常高的访问操作。

youdao

If you happen to call stat on a symbolic link, you'll get back information about the file to which the link points.

如果对符号链接调用stat，那么您将获取该链接所指向的文件的相关信息。

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