qingyuedufeng

@echo off
for /l %%a in (10,-1,1) do (
  echo %%a
  ping -n 2 127.1 >nul
  cls
)
pause>nul
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或者：

@echo off
set "a=10"
:Start
echo %a%
ping -n 2 127.1>nul & cls
set/a a-=1
if %a% gtr 0 goto Start
pause>nul
复制代码