Can a batch file capture the exit codes of the commands it is invoking?

Question

Basically, let's say that I have a batch file that calls myapp1.exe and myapp1.exe exits with Exit Code 1. Can the batch file capture this information and either force the batch file to exit with that same exit code or perform some other logic?

Answer 1

@echo off
rem ...
set errorlevel=
MyApp1.exe
exit /b %errorlevel%

would be the explicit variant.

Answer 2

You could try using errorlevels. Some more info here.

Answer 3

The accepted answer is correct, but if you are using call to call another batch script, and that second batch script is using SetLocal, you may need to use a parsing trick to accomplish this. If you are running into this, add the following code before your exit b:

ENDLOCAL&set myvariable=%myvariable%

Now the value of myvariable is made available to the calling context and you can see the value in the other script.

References:
https://stackoverflow.com/a/16167938/89590
http://www.borngeek.com/2008/05/22/exiting-batch-file-contexts/

Answer 4

%ERRORLEVEL% stores the return value of last executed command

call program.exe
echo program.exe returns "%ERRORLEVEL%"
IF %ERRORLEVEL% NEQ 0 (
  echo FAILED
)