Save the value of a variable on the outside and then import it in Batch

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If I create a variable like this:

set /a EXEMPLO=1

"EXAMPLE" is worth 1, can I save this information to the outside environment (in a file) and then import this value back to the same command? So, after closing the command prompt, I can "read" the value EXAMPLE had before.

cmd batch

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Yes it is possible, just do so to save:

set /a EXEMPLO=1
>arquivo.txt echo %EXEMPLO%

And to read in another .bat do this:

set /p OUTRA_VARIAVEL=<arquivo.txt

echo %OUTRA_VARIAVEL%

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