yhcfsr

@echo off&setlocal enabledelayedexpansion
mode con cols=113 lines=20 &color 9f 
set "bar=■■■■■■■■■■"

for /l %%i in (600,-1,0) do (
	if %%i neq 600 (set/a "num=%%i%%60")
	if defined num if !num! equ 0 set bar=!bar:~,-1!
	cls
	echo After %%i seconds ,start thunder
	echo;!bar!
	ping /n 2 127.1 >nul 
)
pause
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