[Bruce Wayne]

semcrm, попробуйте вот так:

Код:

setlocal enabledelayedexpansion
@echo off
for /f "tokens=*" %%a in ('more^<file.txt') do call :_replace %%a
move /y temp.txt file.txt
exit

:_replace
set i=%*
set i=!i:AbC123=dEf654!
echo %i%>>temp.txt
exit /b