中国DOS联盟

@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%a in ('dir /ad /b "d:\aaa"') do (
     for /f "delims=" %%i in ('dir /s /a-d/b "%%a\*.*"') do set /a n+=%%~zi
     echo %%a中共有文件大小为!n!字节
　 set "n=0"
)
pause>nul

@echo off&setlocal enabledelayedexpansion
for /r /d %%a in (*) do (
  for %%i in ("%%a\*.*") do set/a n+=%%~zi
  set/a kb=n/1024
  call :lp "%%a"
  echo.&set n=0
)
pause>nul&exit/b

:lp
if defined kb (
	set var=,!kb:~-3!
	set size=!var!!size!
               set kb=!kb:~,-3!
 	goto lp
)
set size=!size:~1!
echo %~1中约有	!size!KB
set size=