[windows .bat] sleep and for-loop

@echo "Please check your device..."
@pause

@echo "Start Test... Wait 10s"
@ping 127.0.0.1 -n 30 -w 10000 >nul

@echo "Wait 20s"
@ping 127.0.0.1 -n 30 -w 20000 >nul


@set count = 0
@set max = 10000
:loop
@set /a count = count + 1
@echo Run %count% times
@if %count% == %max % goto end
@goto loop
:end