How to read variables from .SAV files in batch

Question

I have set a variable in a .SAV file, is there anyway to make a batch file to read that variable?

The Varible I set in there was, set d=200 So in a batch file can I read it using %'s ?

like if %d%==200 goto Example ?

Answer 1

echo 200>file
set /p var=<file
echo %var%