Return Error Level

How to return an error level to a batch file. This is a good way to hand off processing from a batch file, to an executable, and back again, performing rudimentary sharing of information.

For example, you could have an automated task that runs a batch script to, say, get some files from a remote location. Then execution gets handed off to an executable to process those files.

After the executable does whatever processing it needed to do, it hands back off to the batch file, setting an errorlevel. That errorlevel can alter the flow in the batch file to perform various tasks based upon the value returned.

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