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How can I add to a file name?

I have a directory called TEST.
Inside TEST there are 200 files (all of different names and extensions).
How can I add “a” in front of each name and still keep the same name and extension. i.e. c:\TEST\hello.txt will become c:\TEST\ahello.txt.
I want to use a batch file.

i don't think that's possibel but i will see what i can do

I found one code that change the first letter to a

This should do it:

Nope ChickenSoupe that doesn't work.

It's designed for command line.
In the batch you must double the %

The lines below work for me with limited testing. Remove the word ECHO if $$$test.txt gives you the desired results.

Best wishes all.

@echo off
for /f "delims=" %%f in (
'dir /b *.*') do (
set name=%%~nxf
ECHO ren "%%~nxf" "a%%~nxf"
)>>$$$test.txt
set name=

ChickenSoup wrote:This should do it:

Code: Select all

for /f "tokens=*" %a in ('dir /b') do rename "%a" "a%a"

Yes, inside a batch file it would be the following:

good job chicken soup it works