What is the syntax for executing a Perl script and capturing its exit value in Windows batch script?

Question

Possible Duplicate:
How do I get the application exit code from a Windows command line?

The Perl script that I'm calling inside batch returns a 1, 2, or 3. What's the syntax for calling this perl sript with an argument 829, and capturing the script's exit code?

 Perl.exe listMembership.pl 829 in cmd.exe

 @echo off
 set retVal=Perl.exe listMembership.pl 829
 echo %retVal%

Answer 1

Take a look at the output of if /? on the command line. Without cmd extensions, the lowest common denominator batch script would be something along the lines of:

@echo off
Perl.exe listMembership.pl 829
if errorlevel 4 goto error
if errorlevel 3 goto exit3
if errorlevel 2 goto exit2
if errorlevel 1 goto exit1
if errorlevel 0 goto exit0

:error
echo:Unexpected exit code %ERRORLEVEL%
goto end

:exit3
echo:Forbnicate
goto end

:exit2
echo:Colormaticate
goto end

:exit1
echo:Motorcade
goto end

:exit0
echo:Is this really success?
goto end

:end
echo:Done

Keep in mind, errorlevel checks have to be in descending order because:

ERRORLEVEL number Specifies a true condition if the last program run
                returned an exit code equal to or greater than the number
                specified.