gggirald respondió:

Prueba con esto: @echo off set carpeta=F:\ set corig=TWELVE set csust=DORIAN pushd %carpeta% for /f "delims=" %%x in ('dir /s /b *.txt') do (find "%corig%" "%%x" >nul&&call :sustituir "%%x") popd goto :eof :sustituir Setlocal EnableDelayedExpansion...