@echo off setlocal enabledelayedexpansion set LOOP=1000 for /L %%i in (3, 3, %LOOP%) do ( set LINE%%i=Fizz ) for /L %%i in (5, 5, %LOOP%) do ( set LINE%%i=!LINE%%i!Buzz ) for /L %%i in (1, 1, %LOOP%) do ( echo !LINE%%i! | findstr zz > NUL …