中国DOS联盟

for %i in (*.*) do @if "%~zi"=="0" del %i

dir c:\a.txt | find "     0 字节"

goto %errorlevel%



:1  

set /p ddd=<a.txt

set num1=%date:~0,4%%date:~5,2%%date:~8,2% 

set num2=%ddd:~0,4%%ddd:~5,2%%ddd:~8,2%

set /a num = num1 - num2

if %num% == 1 echo 这里是要附加的内容 >>a.txt

goto :eof



:0

del a.txt