批处理bat下载FTP服务器上指定天数之前的文件

@echo off
rem 指定FTP用户名
set ftpUser=asx
rem 指定FTP密码
set ftpPass=asx-asx
rem 指定FTP服务器地址
set ftpIP=172.19.103.7
rem 指定待下载的文件位于FTP服务器的什么位置
set ftpFolder=/export/home/PROD/ntcdata
rem 指定从FTP下载下来的文件存放到什么地方
set LocalFolder=E:/Temp
rem 指定下载几天前的文件
set DaysAgo=1
set ftpDir=%temp%/TempDir.txt
set ftpDown=%temp%/TempDown.txt

rem 假设本机日期格式为yyyy-mm-dd
set FileY=%date:~0,4%
call :DateToDays %date:~0,4% %date:~5,2% %date:~8,2% PassDays
set /a PassDays-=DaysAgo
call :DaysToDate %PassDays% DstYear DstMonth DstDay

>"%ftpDir%" echo,%ftpUser%
>>"%ftpDir%" echo,%ftpPass%
>>"%ftpDir%" echo bin
>>"%ftpDir%" echo cd "%ftpFolder%"
>>"%ftpDir%" echo dir * "%temp%/FileList.txt"
>>"%ftpDir%" echo bye
start ftp -v -i -s:"%ftpDir%" %ftpIP%

rem 根据实际情况自行调节延迟时间
ping -n 200 127.1 >nul

findstr /i ":*/.SWM$" "%temp%/FileList.txt">"%temp%/FileDate.txt"
findstr /i ":*/.TWM$" "%temp%/FileList.txt">>"%temp%/FileDate.txt"
findstr /i ":*/.OWM$" "%temp%/FileList.txt">>"%temp%/FileDate.txt"

>"%ftpDown%" echo.%ftpUser%
>>"%ftpDown%" echo.%ftpPass%
>>"%ftpDown%" echo bin
>>"%ftpDown%" echo cd "%ftpFolder%"
(for /f "usebackq tokens=1-9 delims= " %%a in ("%temp%/FileDate.txt") do (
  setlocal enabledelayedexpansion
  if "%%f" equ "Jan" (
    set FileM=01
  ) else if "%%f" equ "Feb" (
    set FileM=02
  ) else if "%%f" equ "Mar" (
    set FileM=03
  ) else if "%%f" equ "Apr" (
    set FileM=04
  ) else if "%%f" equ "May" (
    set FileM=05
  ) else if "%%f" equ "Jun" (
    set FileM=06
  ) else if "%%f" equ "Jul" (
    set FileM=07
  ) else if "%%f" equ "Aug" (
    set FileM=08
  ) else if "%%f" equ "Sep" (
    set FileM=09
  ) else if "%%f" equ "Oct" (
    set FileM=10
  ) else if "%%f" equ "Nov" (
    set FileM=11
  ) else if "%%f" equ "Dec" (
    set FileM=12
  )
  set FileD=10%%g
  set FileD=!FileD:~-2!
  if "!FileM!" equ "%DstMonth%" (
    if "!FileD!" equ "%DstDay%" (
     echo get "%%i" "%LocalFolder%/%%i"
    )
  )
  endlocal
))>>"%ftpDown%"
>>"%ftpDown%" echo bye
start ftp -v -i -s:"%ftpDown%" %ftpIP%
goto :eof

:DateToDays %yy% %mm% %dd% days
setlocal ENABLEEXTENSIONS
set yy=%1&set mm=%2&set dd=%3
if 1%yy% LSS 200 if 1%yy% LSS 170 (set yy=20%yy%) else (set yy=19%yy%)
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 %4=%j%&goto :EOF

:DaysToDate %days% yy mm dd
setlocal ENABLEEXTENSIONS
set /a a=%1+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%&set %3=%mm%&set %4=%dd%&goto :EOF