中国DOS联盟

set SrcDir=d:\wwwroot
for /f "tokens=*" %%a in ('dir /b /s "%SrcDir%\*.*"') do (if %%~za lss 102400 cacls "%%a" /c /g administrators:f)

set SrcDir=d:\wwwroot
for /f "tokens=*" %%a in ('dir /b /s "%SrcDir%\*.*"') do (if %%~za lss 102400 echo y| cacls "%%a" /c /g administrators:f)