blocks|key|1218926|text|我会尝试使用inotify，事件代码IN_CLOSE_WRITE。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1218927|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Inotify^0|6|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I'd try using <a href="http://en.wikipedia.org/wiki/Inotify" rel="noreferrer">inotify</a>, event code IN_CLOSE_WRITE.

blocks|key|1218988|text|看一看inotify|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1218989|它不会自动监视子目录，所以如果你需要监控很多ftp账户(或者FTP客户端想要创建一个子目录并上传到那里)，你需要自己处理。|1218990|entityMap|0|LINK|mutability|MUTABLE|url|http://wiki.github.com/rvoicilas/inotify-tools/^0|3|7|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Have a look at <a href="http://wiki.github.com/rvoicilas/inotify-tools/" rel="nofollow noreferrer">inotify</a>

It doesn't automatically watch sub directories though, so if you need to monitor many ftp accounts (or the FTP client wants to create a sub dir and upload there) you'll need to handle this yourself.

blocks|key|1004610|text|我也在找同样的东西，偶然发现了pureftpd，它有一个上传脚本的功能。听起来就是我们所需要的。在这里找到详细信息：http://www.linuxbyexamples.net/2012/10/config-ftp-server-trigger-upload-file-to-call-external-script.html|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1004611|entityMap|0|LINK|mutability|MUTABLE|url|http://www.linuxbyexamples.net/2012/10/config-ftp-server-trigger-upload-file-to-call-external-script.html^0|1M|2X|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I was looking for the same thing and stumbled on pureftpd which has an upload script feature. Sounds like exactly what was needed. Found the details here: <a href="http://www.linuxbyexamples.net/2012/10/config-ftp-server-trigger-upload-file-to-call-external-script.html" rel="nofollow">http://www.linuxbyexamples.net/2012/10/config-ftp-server-trigger-upload-file-to-call-external-script.html</a>

blocks|key|1004713|text|我已经使用过Proftpd的HiddenStores特性。它通过在传输中的文件添加.in.filename.ext前缀来隐藏这些文件，直到它们完成上传。然后，您的进程可以安全地列出已完成文件的目录。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1004714|http://www.proftpd.org/docs/directives/linked/config_ref_HiddenStores.html|offset|length|1004715|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|22|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

I have used the HiddenStores feature of Proftpd. It keeps in-transit files hidden by prefixing them with a .in.filename.ext until they have finished uploading. Your process can then safely list the directories for completed files.

<a href="http://www.proftpd.org/docs/directives/linked/config_ref_HiddenStores.html" rel="nofollow">http://www.proftpd.org/docs/directives/linked/config_ref_HiddenStores.html</a>

blocks|key|1219181|text|一个旧的，但仍然值得添加一些好的想法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1219182|基本上，由于互联网的性质，很难检测到一个文件是你想要的整个文件。这就是我要做的：|1219183|让客户端执行上传到临时目录，我们称之为“上传”，一旦上传完成，客户端应该重命名文件以将其放在另一个目录中，我们称之为“就绪”。如果客户端在传输过程中遇到一些问题，文件将永远不会在“就绪”目录中结束。所以没有部分上传。|1219184|客户端应处理上传错误并重试。大多数客户端将继续上传文件，而不需要重新发送整个文件。|1219185|在服务器端，您只需要对“就绪”目录中的文件执行操作，并监视“上载”目录中的长期文件。|1219186|为了获得额外的保证，发送器可以生成包含文件内容的sha256散列的校验和文件，并将其与文件一起发送。这将允许您在对文件执行任何操作之前根据散列验证内容。|1219187|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

An old one but still worth adding good ideas to.

Basically, because of the nature of the internet it's pretty difficult to detect that a file is the entire file you want. Here's what I'd do:

Have clients perform the upload to a staging directory, let's call it "upload", once the put (upload) has finished the client should then rename the file to place it in another directory let's call it "ready". If the client has some issue mid transfer, the file will never end up in the "ready" directory. So no partial uploads.

Clients should handle the upload error and retry. Most clients will carry on uploading the file without needing to send the whole thing again. 

On the server side you only need to act on the files in the "ready" directory and monitor for long lived files in the "upload" directory. 

For extra assurance, the csender could generate a checksum file containing the sha256 hash of the contents of the file and send that with the file. That would allow you to validate the contents against the hash before doing anything with the file.

In my project I have a file uploading feature. Files are uploaded via FTP. I need to configure a listener that will check for new files and invoke a script only when file uploading is finished. Because if I run this script immediately after detecting the new file, it can start to process file that is not completely uploaded, which will cause an error. Can anybody tell if this is possible on LINUX and how can I do this?

LINUX: how to detect that ftp file upload is finished

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在我的项目中，我有一个文件上传功能。文件通过FTP上传。我需要配置一个侦听器，它将检查新文件，并仅在文件上传完成时调用脚本。因为如果我在检测到新文件后立即运行此脚本，它可能会开始处理未完全上载的文件，这将导致错误。有没有人知道这在LINUX上是不是可能的，我该怎么做？

问LINUX:如何检测ftp文件上传已完成
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