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