terse

@echo off
for /f "tokens=1-3delims=:." %%i in ("%time%") do set /a t1=%%i*3600+ (10%%j)%%100*60+10%%k%%100
for /l %%i in (1,1,30000) do ver>nul
for /f "tokens=1-3delims=:." %%i in ("%time%") do set /a t2=%%i*3600+ (10%%j)%%100*60+10%%k%%100
set /at=t2 - t1
echo;%t% 
pause
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