this batch will delete previous forge snapshot folders and download the latest version

update-forge-snapshot.bat

REM get current snapshot version
for /f "tokens=1 delims=\n" %%i in ('curl https://downloads.cardforge.org/dailysnapshots/version.txt') do set version=%%i
REM stop if version empty
if "%version%"=="" goto :eof
REM delete all folders starting with "forge-gui-desktop"
for /d %%i in (forge-gui-desktop*) do rmdir /s /q "%%i"
REM download latest version
curl -L -o forge-gui-desktop.tar.bz2 https://downloads.cardforge.org/dailysnapshots/forge-gui-desktop-%version%.tar.bz2
REM extract into folder
mkdir forge-gui-desktop-%version%
tar -xjf forge-gui-desktop.tar.bz2 -C forge-gui-desktop-%version%
REM delete zipped file
del forge-gui-desktop.tar.bz2