[日期时间] 如何将以8位数字日期命名在指定天数日期之前的文件夹移动到其他指定文件夹里

@echo off & setlocal ENABLEEXTENSIONS 
call :Date2Day %date:~0,10% sdays
set tian=90
set src=E:\Record\
set dst=F:\
set /a sdays-=tian
call :Day2Date %sdays% difdate
::先复制文件目录，成功后再删除该目录
for /f "delims=" %%a in ('dir /s /b "%src%\*.*"') do (
if "%%~na" leq "%difdate%" (
xcopy "%%a" %dst%"%%~na"\ /e/h/d/r
if exist %dst%"%%~na" rd "%%a" /s/q
)
)
::屏蔽下行自动关闭窗口
exit
::日期处理模块
:Date2Day
setlocal ENABLEEXTENSIONS 
for /f "tokens=1-3 delims=/-, " %%a in ('echo/%1') do ( 
  set yy=%%a & set mm=%%b & set dd=%%c 
)
set /a dd=100%dd%%%100,mm=100%mm%%%100 
set /a z=14-mm,z/=12,y=yy+4800-z,m=mm+12*z-3,j=153*m+2 
set /a j=j/5+dd+y*365+y/4-y/100+y/400-2472633
endlocal&set %2=%j%&goto :EOF 
:Day2Date
setlocal ENABLEEXTENSIONS 
set /a i=%1,a=i+2472632,b=4*a+3,b/=146097,c=-b*146097,c/=4,c+=a 
set /a d=4*c+3,d/=1461,e=-1461*d,e/=4,e+=c,m=5*e+2,m/=153,dd=153*m+2,dd/=5 
set /a dd=-dd+e+1,mm=-m/10,mm*=12,mm+=m+3,yy=b*100+d-4800+m/10 
(if %mm% LSS 10 set mm=0%mm%)&(if %dd% LSS 10 set dd=0%dd%) 
endlocal&set %2=%yy%%mm%%dd%&goto :EOF
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