Windows下通过FTP自动备份数据到服务器并删除指定天数前的备份

@echo off
echo.
set data=%date:~0,4%%date:~5,2%%date:~8,2%
set /a deldata=data-7
echo open 192.168.1.1 21 >ftp.txt
echo admin>>ftp.txt
echo 123456>>ftp.txt
echo binary>>ftp.txt
echo cd databak>>ftp.txt
echo lcd D:\>>ftp.txt
echo prompt>>ftp.txt
echo mput data_db_%data%*.BAK >>ftp.txt
echo mdelete data_db_%deldata%*.BAK >>ftp.txt
echo close>>ftp.txt
echo bye>>ftp.txt
ftp.exe -s:ftp.txt
echo.