====== makebackup.bat ======

<code bash>
@echo off

set dtend=%date:~6,4%%date:~3,2%%date:~0,2%


for /f "eol=# delims== tokens=1,2" %%i in (makebackup.dat) do (
    set %%i=%%j
)

echo Working from %dt% to %dtend%
set arcname=promauto-src_%dt%-%dtend%.rar

rar a -ta%dt% %arcname% promauto-src

echo dt=%dtend%>makebackup.dat

move %arcname% F:\
</code>