@echo off&setlocal EnableDelayedExpansionfor /l %%i in (1,1,3) do (set n=%%i for /f "delims=" %%a in ('type,!n!.txt') do ( set a=%%a set a=!a:1234=5678! set a=!a:3124=5678! set a=!a:2415=5678! echo,!a! )>>A!n!.txtecho,del /q !n!.txt))pause