China DOS Union

I searched the forum and didn't find a post discussing this issue, so I'm posting to ask everyone for help:

How to read the modification time of a file, for example: D:\test.xls

How to obtain the modification time of this file, for example: June 13, 2006, 13:36:28

[ Last edited by uemuem on 2006-10-14 at 01:33 ]

@echo off
echo %~t1 Saved as test.cmd

Running test.cmd d:\test.xls should allow you to see it

Thanks, this works, but it's a bit cumbersome. Can you combine it into one BAT file and save the result to 1.txt? I just tried it and it didn't work properly.

@echo off
call :dan D:\test.xls
start 1.txt
goto :eof

:dan
echo %~t1 >1.txt
goto :eof

[ Last edited by pip on 2006-10-14 at 02:45 ]

Really thank you, thank you PIP, I want to use him to judge whether the file has been modified, and then make a backup!

To determine whether a file has been modified, one way is to judge by the modification time, and the other is to look at the archive attribute (you need to remove the archive attribute first before).

The moderator's words are a bit advanced, and I don't quite understand.

Can you give an example?

Or give an automatic backup code for beginners to learn. I've just started and have too many things to learn.

For example: I want to judge whether D:\test.xls has been changed. If it has been changed, back it up to E:\test modification time.xls; if it hasn't been changed, do nothing...

[ Last edited by uemuem on 2006-10-13 at 22:47 ]

Figuring this out will solve your problem:
http://www.cn-dos.net/forum/viewthread.php?tid=22195&fpage=1

The most commonly used commands often contain the most powerful functions. Please see the relevant help information for dir:

DIR  attributes]]     

  sortorder]]    timefield]]   

……

  timefield   C  Creation time

              A  Last access time

              W  Last write time