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Truncating a filename to create another filename using dos commands in a batch file

I have files that are automatically generated with the following format
910716_0.ATM The number is alway unique. I must rename this file using dos commands from a batch file. The OS is Windows 2003 server. So that I do have less of a chance to create a duplicate I need to change the filename to look as follows

rri10716.edi

Below I have been able to get the file to look like 10716 but I am having problems adding the rri in the beginning and the .edi extension

echo on & setlocal EnableDelayedExpansion
for %%J in (????????.ATM) do (set file=%%J:~1,5
ren %%J !file:~1,5!)
ren file rri%%J
echo file > %file%

oBdA

Try this; it's currently in test mode and will only display the rename command it would normally run.
Remove the capitalized ECHO to run it for real:

echo on & setlocal EnableDelayedExpansion
for %%J in (????????.ATM) do (
  set file=%%~J
  ECHO ren "%%~J" "rri!file:~1,5!.edi"
)

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debschultz

ASKER

That did rename the file but the file did not have the content

oBdA

What exactly do you mean with "the file did not have the content"? If the file didn't have a content before renaming, it obviously won't have content afterwards, either.
What exactly are you trying to achieve here, except renaming a file (which is the only function you required in your question)?

debschultz

ASKER

I was playing around so let me say that when I tried what you gave me nothing happened. The filename did not change for the .ATM

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oBdA

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debschultz

ASKER

Thank you for your quick response