最简单的代码运行进度条

比较简洁的进度条:
@ echo off&title DOS资源站 www.cmdos.net
setlocal enabledelayedexpansion
:kaishi
cls
set /p sudu=输入显示速度(0-n的数字):
set str=■
for /l %%i in (1,1,30) do (
cls
set /a time=30-%%i
echo 剩余时间:!time!秒
set/p=!str!<nul
set str=!str!■
for /l %%j in (1,1,%sudu%) do (echo. >nul)
)
goto :kaishi