Batch DOS - Replace "part of" filenames

[embassy81]

Hi guys, sorry me if there is something similar, but i cant find something to help me.
i have some file named:
11223344_0123_.pdf
11223355_1234_.pdf
(or if can be more simply i can generate name as 11223344_0123.pdf, whitout last underscore)

i need rename all files without chars beetween underscore, and obtain:
11223344.pdf
11223355.pdf

i have write this

Code: Select all

setlocal enabledelayedexpansion
for %%a in (*_*) do (
  set file=%%a
  ren "!file!" "!file:_=!"
)

but i cant find something to say "from first _ to last _
similar

Code: Select all

  ren "!file!" "!file:_*_=!"

but in this way no work

can you help me? really thanks

[aGerman]

You should use a FOR /F loop with underscore as delimiter.
Untested:

Code: Select all

for %%a in (*_.pdf) do for /f "delims=_" %%b in ("%%~na") do (
  ren "%%~a" "%%b%%~xa"
)

Steffen

[embassy81]

Really thx!

at the end i use this method

Code: Select all

for %%a in (*_*) do (
  set file_completo=%%a
  set file_nome=%%~na
  set name=!file_nome:~0,-6!
  ren "!file_completo!" "!name!.pdf"
)