CODEWITHSUNDEEP
windowscmd
Aleksandr Solovey
Aleksandr Solovey

Reputation: 763

Rename files in directory with CMD in loop in reverse order

There are four files in directory: 12_1.txt, 12_2.txt, 12_3.txt, 12_4.txt. I need to rename them (using command "ren" or "rename") so, that:

12_1.txt would be the 12-4.txt

12_2.txt would be the 12-3.txt

12_3.txt would be the 12-2.txt

12_4.txt would be the 12-1.txt

I'm tried to do something like that:

set /a pos=0 & set /a length=5 & for %x in (*) do 
@(set /a pos+=1 & set /a length-=1 & ren 12_%length%.* 12-%pos%.* >nul)

But it did not work and only one file was renamed, befause of "ren" command always saw one value for the variables the last one that the loop gave. I think I wrote a lot of superfluous there. My knowledge in cmd is at the level of 7% of 100.

Upvotes: 1

Views: 397

Answers (2)

CreeDorofl
CreeDorofl

Reputation: 173

I had this issue but with 20 or so files in each folder, and ended up making a .bat file, which runs in the same folder as the files that need renaming. In my case the filenames were like IMAGE_0001.JPG, IMAGE_0002.JPG etc... but some batches of images started somewhere arbitrary like IMAGE_0127.JPG. I had to preserve the same prefixes and same numbers, just reversing the order.

@echo off
setlocal enabledelayedexpansion

:: Set the prefix and extension
set "basename=IMAGE_"
set "extension=.JPG"

:: Set starting and ending numbers
set /a start=1
set /a end=50

:: Calculate the total count of files
set /a total=end - start + 1

:: Create a temp folder
mkdir temp

:: Move all files to the temp folder
for %%F in (%basename%*.JPG) do (
    move "%%F" temp
)

:: Rename files in reverse order
set /a newNumber=end
for %%F in (temp\%basename%*.JPG) do (
    set "oldFile=%%F"
    set "newFile=%basename%!newNumber!%extension%"

    echo Renaming !oldFile! to !newFile!
    move "!oldFile!" "!newFile!"

    set /a newNumber-=1
)

:: Cleanup
rmdir temp

echo Done
endlocal

Upvotes: 0

oOo
oOo

Reputation: 291

This can at least sort the names in reverse order and output it to a text file,

then you can copy over those lines for renaming or copieing purposes:

dir /b /O:-N > files2.txt

Upvotes: -1

Related Questions