Isso deve fazer você começar
@echo off
:: Get current day month and year, padded with zeroes
for /f "skip=1 tokens=1-3 usebackq" %%a in ('wmic path Win32_LocalTime Get Day^,Month^,Year') do (
if not "%%c"=="" (
set y=%%c
set m=0%%b
set d=0%%a
)
)
set m=%m:~-2%
set d=%d:~-2%
:: Loop over image files, in this case, 100 of them
setlocal enabledelayedexpansion
for /L %%i in (1,1,100) do (
set index=0%%i
set index=!index:~-2!
set url=http://myhomepage.com/plots/!y!!m!!d!-!index!/4711/4712.png
wget -O "!y!!m!!d!-!index!.png" "!url!"
)
endlocal enabledelayedexpansion