I am trying to rename multiple files in a folder, APPENDING a text to the end of each filename. for example, I am using the following ren command to rename 4 files, but it only renames 2 files correctly, says :"A duplicate file name exists" error for the 1 file:

command: ren *.* *_new.*

SalesDigest_Natl_Trad.pdf
SalesDigest_Natl.pdf
SalesDigest_Atlanta_Reg.pdf
SalesDigest_Atlanta.pdfFile names in the folder: ->


File names after executing the command:->
SalesDigest_new.pdf
SalesDigest_Natl_new.pdf
SalesDigest_Natl.pdf
SalesDigest_Atlanta_new.pdf


As you can see, the results are not as expected. I know there are issues with using ren with wild cards. Any suggestions?

My ultimate goal is to append a timestamp to the end of each file in the folder, for which I am using the following command:
ren *.* *_%date:~7,2%%date:~10,4%.*Code: [Select]@echo off
SET var=_%date:~7,2%%date:~10,4%
for /f "delims=" %%a in ('dir *.pdf /b') do ren "%%a" "%%~na%var%%%~xa"Thank you foxidrive!

This is excatly what I was looking for.

Thanks,
MaxxJust out of curiosity, why does the single line rename command (in my first post) mess up the file names? Thanks!

Btw, below is my final batch file which will rename all the files under a folder except the sub DIRECTORIES.

==============================================================
@echo off
REM This batch file appends the files under the Monthly_Sales folder with date in YYYYMM format
cd Monthly_Sales
if %errorlevel% neq 0 exit /b %errorlevel%
set var=_%date:~10,4%%date:~4,2%
for /f "delims=" %%a in ('dir *.* /b/A:-D') do ren "%%a" "%%~na%var%%%~xa"
cd ..
==============================================================
Quote from: maxxcontractor on September 25, 2012, 03:00:02 PM

Just out of curiosity, why does the single line rename command (in my first post) mess up the file names? Thanks!