是否READDIR（）保证订单？ [英] Does readdir() guarantee an order?

问题描述

我收到使用执行opendir / readdir的一个类似Linux系统中的文件列表。看来，目录项的文件名的字母顺序返回。不过，我没有看到关于此订单所保证的手册页事情。

I'm getting a list of files on a linux-like system using opendir/readdir. It appears that the directory entries are returned in alphabetical order of file name. However, I don't see anything in the man pages about this order being guaranteed.

谁能告诉我是否不READDIR guarrantees订单？

Can anyone tell me whether or not readdir guarrantees an order?

推荐答案

的 READDIR 方法不保证任何顺序。如果你想确保他们按字母顺序排序，你需要这样做自己。

The readdir method doesn't guarantee any ordering. If you want to ensure they are sorted alphabetically you'll need to do so yourself.

请注意：我搜索了一下对最终文件说这样的话。我来最接近的是下面的链接

Note: I searched for a bit for definitive documentation saying this is the case. The closest I came is the following link

• http://utcc.utoronto.ca/~cks/space/blog/unix/ReaddirOrder

这决不是明确的，但它确实给该命令的很好的概述，它的历史以及它的实现通常是遍历顺序。

It's by no means definitive but it does give a nice overview of the command, it's history and how it's implementation is typically traversal order.

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