<div>
Create a batch with:<br />
<br />
for /f %%a in ('dir /b *.txt ^| findstr /I /X /R /C:^[0-9]*.txt') do ren %%a pyxbl%%a<br />
<br />
It will filter all files beginning with a number (not neccessarily 8 digits) and rename them beginning with pyxbl. It will fail of course if a file with the new name already exists.<br />
<br />
Hope it helps,<br />
<br />
Michael
</div>


Create a batch with:

for /f %%a in ('dir /b *.txt ^| findstr /I /X /R /C:^[0-9]*.txt') do ren %%a pyxbl%%a

It will filter all files beginning with a number (not neccessarily 8 digits) and rename them beginning with pyxbl. It will fail of course if a file with the new name already exists.

Hope it helps,

Michael

<div>
If you need to make sure to touch the 8-digit files only change &nbsp;it like this:<br />
<br />
for /f %%a in ('dir /b *.txt ^| findstr /I /X /R /C:^[0-9][0-9][0-9][0-9][0<wbr />-9][0-9][0<wbr />-9][0-9].t<wbr />xt') do ren %%a pyxbl%%a
</div>


If you need to make sure to touch the 8-digit files only change  it like this:

for /f %%a in ('dir /b *.txt ^| findstr /I /X /R /C:^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9].txt') do ren %%a pyxbl%%a

<div>
If this is going to be done in true dos, won't the 8.3 filenames be a problem?
</div>


If this is going to be done in true dos, won't the 8.3 filenames be a problem?

<div>
Sorry for double post, internet glitch.
</div>


<div>
<div class="content wysiwyg-content">
I am wanting to know if it is possible to rename a file in the following manner.<br />
I am creating a file like 00000009.txt and want to rename the file to pyxbl00000009.txt with a batch file. The number will always be 8 characters I need to add pyxbl each time it is triggered.
</div>
</div>


I am wanting to know if it is possible to rename a file in the following manner.
I am creating a file like 00000009.txt and want to rename the file to pyxbl00000009.txt with a batch file. The number will always be 8 characters I need to add pyxbl each time it is triggered.

Rename file in DOS and change string

Microsoft Disk Operating System (MS-DOS) was an operating system for x86-based personal computers, and traces of it are still found in the Windows operating system. DOS is still used in some embedded systems and for certain legacy 16-bit networks.