Ms-Dos - CONSERVAR LOS PRIMEROS CARACTERES DE VARIOS ARCHIVOS MP4 EN .BAT

@echo off

set ext=mp3

for /f "tokens=*" %%f in ('dir /b /a *.%Ext%') do call :lab %%f

goto :EOF

:lab

   set original=%*

   set newname=%original:~5%

   ren "%original%" "%newname%"

   goto :eof

@echo off

set ext=mp3

for /f "tokens=*" %%f in ('dir /b /a *.%Ext%') do call :lab %%f

goto :EOF

:lab

   set original=%*

   set newname=%original:~0:5%

    ren "%original%" "%newname%"

    goto :EOF

IF EXIST "%newname%"   GOTO :YA_EXISTE

IF NOT EXIST"%newname%"   REN "%original%" "%newname%"

goto :EOF

:YA_EXISTE

   @ECHO EL "%newname%" YA EXISTE Y NO SE RENOMBRO!

:FIN

IF EXIST "%newname%" GOTO :YA_EXISTE

    REN "%original%" "%newname%"

    goto :EOF

:YA_EXISTE

    @ECHO EL "%newname%" YA EXISTE Y NO SE RENOMBRO "%Original%"!

    goto :EOF