Batch Rename Script Help!

Hello!

I am very new to this and need a little help. I am trying to create a batch file that will rename files that are called png_X.png (the X being the number page it is). The code I have is below. It works fine with out the pipe sort command but it sorts the by the ones place first and then by the tens. I tried putting the pipe sort command in to tell it how to see the file names but it doesn’t run at all with that command. Is my line wrong somehow with the pipe command?

@echo off
SETLOCAL ENABLEDELAYEDEXPANSION
set i=1
cd C:\Users\Desktop\Visio Stuff\File Rename\Temp Picture File
for /f %%f in ('dir /b .\ | sort /+10') do (
echo renaming "%%f" to "!i!.jpg"
ren "%%f" "!i!.jpg"
set /A i=!i!+1
)
ENDLOCAL
set "i="

I've always avoided batch like the plague. Did my XP automation in VBS. With Win 10, I finally learned PowerShell and that's what you should be using for WIndows 10 automation.

It would be helpful if you edited your question to include sample data. I'm guessing the problem lies in the numberical portion varies in width, lacking leading zeros and thus sorting correctlly in Explorer but not in a pure ascii sort. If that's not correct, please clarify with examples.

If I undersand correctly, the pseudo-code is:

1. Get files matching pattern "png_#.png", "png_##.png", "png_###.png", etc. where # is a digit.
2. Sort by the number found in the filename.
3. Rename with a digit corresponding to its sort position.

In PowerShell, that would look like this:

Code:

[ref]$i = 1
gci | ? Name -match '^png_(\d+)\.png' |
    Select @{ N = 'Path' ; E = { $_.FullName }},
            @{ N = 'Order' ; e = { [Int]$matches[1] }} |
 Sort Order  | Rename-Item -NewName { '{0}.jpg' -f $i.Value++ }

gci is an alias for Get-ChildItem
? is an alias for Where-Object
Select-Object
Sort-Object
Rename-Item
About Ref

Just in case you still insist on using batch commands:

Does escaping the pipe with ^ work ?
for /f %%f in ('dir /b .\ ^| sort /+10') do (
instead of
for /f %%f in ('dir /b .\ | sort /+10') do (