last-modified | 易学教程

Robocopy - Compare modified dates of files?

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问题 I've been trying to create this script that basically mirrors two sets of folders and it's content (including subfolders), but only copy files that are newer than the ones that already exist. I tried doing this by writing a vbscript, but it turns out that I manualle need to scan each subfolder and then it's content. And then that subfolder's content as well and so on and so forth. So I'm wondering if anyone knows if this can be done with Robocopy? 回答1: ROBOCOPY %SOURCE_DIR% %TARGET_DIR% *

Can I conditionally stop an Ant script based on file last modified time?

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问题 I've been looking all over the Internet, but couldn't find an answer anywhere. I have an MQFTE job coded in ANT script and I'm having difficulty with a process that moves files if a file doesn't have today's date. What I would like to do is a conditional stop, something like a return true value in a middle of the execution so the job is not going to go through the further routine and just end if the file is identified as to be skipped. Is that possible in ANT? Or does it have to go through

你知道 http 响应头中的 ETag 是如何生成的吗

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关于 etag 的生成需要满足几个条件当文件不会更改时， etag 值保持不变。所以不能单纯使用 inode 便于计算，不会特别耗 CPU。这样子 hash 不是特别合适便于横向扩展，多个 node 上生成的 etag 值一致。这样子 inode 就排除了关于服务器中 etag 如何生成可以参考 HTTP: Generating ETag Header 那么在 nginx 中的 etag 是如何生成的？ nginx 中 ETag 的生成我在网上找到一些资料与源代码了解到了 etag 的计算方法。由 python 伪代码表示计算方法如下 etag = '{:x}-{:x}'.format(header.last_modified, header.content_lenth) 源码: ngx_http_core_modules.c etag->value.len = ngx_sprintf(etag->value.data, "\"%xT-%xO\"", r->headers_out.last_modified_time, r->headers_out.content_length_n) - etag->value.data; 总结： nginx 中 etag 由响应头的 Last-Modified 与 Content-Length 表示为十六进制组合而成。

Vbscript - Compare and copy files from folder if newer than destination files

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问题 I'm trying to design this script that's supposed to be used as a part of a logon script for alot of users. And this script is basically supposed to take a source folder and destination folder as basically just make sure that the destination folder has the exact same content as the source folder. But only copy if the datemodified stamp of the source file is newer than the destination file. I have been thinking out this basic pseudo code, just trying to make sure this is valid and solid

how to enable Last-Modified header for static resources served by Google App Engine (Java version)?

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问题 Is there a way to turn on the Last-Modified header for static resources served up by Google App Engine? I have a large zip file that my app serves up to an iPhone client app, and I'd like to only download it if the Last-Modified date indicates that it is newer than the cached copy on the iPhone. PS: I am using the Java version of Google App Engine. Solution: I ended up writing a simple webapp to serve up my own static resources. Not hard to do. There is a small configuration step I had to do

Move and rename files from folder to folder as a .bat file and adding modified date at beginning

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问题 I have spent many hours trying to work this out and no luck. Scenario: Have multiple different file names, but same extension in a folder. On Windows server 2008 64bit. Want to move them to another folder using a schedule batch job. .bat. During the move I want to rename them to include their last modified date. I am trying to put into this format: yyyymmddhhmmss-name.zip I have looked at PowerShell and for commands and just can't work it out. I found this 3-line piece of code and it worked

How can you mine the “Last Modified Date” for an ASP.NET page which is based on a Master Page?

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问题 We would like to embed some code in each ASP.NET page that queries its "Last Modified Date" and displays it at the bottom of the page. In the past, we've relied on the person making any changes to the page to manually update the " This page last modified on (todays date) " text at the bottom of the page. Many times they forget to update this, which is causing some confusion as to when the information was last updated on that particular page. Since the site is not based on a CMS which could

How list all tables with data changes in the last 24 hours?

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问题 We had an ugly problem, by mistake, a balancer redirect some requests to a test instance with pretty similar data than production, now I know that there are data recorded in the test Postgres that belongs to production Is there a way to list all the tables with data changes in the last 24 hours in Postgres? Postgres version is 9.3 and I have around 250 tables. 回答1: First consider my comment. Postgres up to and including 9.4 does not by itself record timestamps when rows were inserted or

Is it possible to reset the last modified date of an Android file?

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I'm writing a purge function for our software that removes all image files that haven't been used in over a month. To do this, I am checking two things: the last-modified date of the file a query on a database that shows recently viewed files. The query is much slower than the file check. So I would ideally like to be able to reset the last modified date on any files that fail the first check, but pass the second, so that (for example) a list of venerable but often-used files aren't gradually increasing the processing load of the management system. Is there a way to do this without recourse to

Why is Java (Android?) setting my file's last modified date to tomorrow?

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问题 I'm creating files in my Android application using: FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE); fos.write(data); fos.flush(); fos.close(); Then later I'm trying to do some cleanup, so I'm comparing the last modified date to some threshold value, but the comparison is showing that the file's last modified date is tomorrow sometime. Keep in mind, when I say tomorrow, that is relative to today (the file modification date)... whichever day this may be that you