China DOS Union

Hello everyone, I'm currently facing a very tough requirement:
There are N txt files in the current directory, and I need to generate random numbers,
so that each file is renamed with a random number name, and the suffix remains unchanged.
The batch naming programs I searched for earlier can't modify like this. Especially when there are few files, the generated random numbers are very easy to repeat, and I don't know how to avoid repetition. Please help everyone.

@echo off&setlocal ENABLEDELAYEDEXPANSION

for %%a in (*.txt) do call:mytest "%%a"





:mytest



set a=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890

set /a a_=(%random%+62)%%62

set /a b_=(%random%+62)%%62

set /a c_=(%random%+62)%%62

set /a d_=(%random%+62)%%62

set /a e_=(%random%+62)%%62

set /a f_=(%random%+62)%%62

echo rename  %1 !a:~%a_%,1!!a:~%b_%,1!!a:~%c_%,1!!a:~%d_%,1!!a:~%e_%,1!!a:~%f_%,1!.txt

rename  %1 !a:~%a_%,1!!a:~%b_%,1!!a:~%c_%,1!!a:~%d_%,1!!a:~%e_%,1!!a:~%f_%,1!.txt

[ Last edited by janeter on 2007-2-4 at 11:04 PM ]

If you search the owner, you can see that there are many such posts in the forum.
By the way, ask the owner, since you are afraid of repetition, why not arrange the files in serial number form? How neat that would be. For example, 1.txt, 2.txt...

Hehe, can't search it out. The requirement is to randomly rename the files in the directory regularly, so that's why I thought of making a script to execute regularly.

How should you change this to generate non - repeating random numbers, haha

Just treat it as posting water posts












[ Last edited by ccwan on 2007-2-5 at 03:54 AM ]

```
@echo off
for %%a in (*.txt) do call:mytest "%%a"

:mytest
rename %1 %random%.txt



Studied hard for an afternoon, and finally I wrote an executable code, haha......
After execution, it can randomly rename, but the result is always:
The syntax of the command is incorrect.
Don't know how to do it. Thank you to everyone who has helped me, and wish you all a happy new year!
```

The following code can rename the txt files in the current directory to filenames between 1 and 32767, and no longer process the files that have been renamed. You can give it a try:

@echo off

for /f "delims=" %%i in ('dir /a-d /b *.txt^|findstr /v "^*\.txt$"') do call :ren_ "%%i"

pause

exit



:ren_

ren %1 %random%.txt 2>nul||goto ren_

goto :eof

The new usage and format of `findstr /v "^[0-9]*\.txt$"` are learned

Named with date and time