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I have a batch file that runs a couple executables, and I want it to exit on success, but stop if the exit code <> 0. How do I do this?
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To test for a specific ERRORLEVEL, use an IF command with the %ERRORLEVEL% variable. n.b. Some errors may return a negative number. If the batch file is being executed as a scheduled task, then exiting with an error code will be logged as a failed task. You can monitor the event log to discover those failures.
Error Level. The environmental variable %ERRORLEVEL% contains the return code of the last executed program or script.
batch-file Echo @Echo off @echo off prevents the prompt and contents of the batch file from being displayed, so that only the output is visible. The @ makes the output of the echo off command hidden as well.
%0 references argument 0 – the name of the batch file – always exactly as specified on command line or in another batch file.
Sounds like you'll want the "If Errorlevel" command. Assuming your executable returns a non-0 exit code on failure, you do something like:
myProgram.exe if errorlevel 1 goto somethingbad echo Success! exit :somethingbad echo Something Bad Happened. Errorlevel checking is done as a greater-or-equal check, so any non-0 exit value will trigger the jump. Therefore, if you need to check for more than one specific exit value, you should check for the highest one first.
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