Re: Returned Code

Could you please add some <code> tags to make your script readable? For example,

<code>
script goes here
</code>

UPDATE: I think the reason you're getting the '256' return is because your system("a.exe"); line is returning an error, not the bit-shifted '3' you are expecting. And I think it's returning an error because system() can't find a.exe, because it's not in your path. Does the return change if you specify system("./a.exe"); , or otherwise explicitly add in the path to the exe?

I'm not on a Windows system, so I can't test your script any more directly.

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Re^2: Returned Code by ikegami (Patriarch) on Jun 15, 2008 at 17:09 UTC
"." is always in the front of the PATH in Windows (implicitly), so if `system("a.exe");` fails, so would `system(".\a.exe");`. (`system("./a.exe");` just plain won't work.) But, that's a good thoery `>perl -e"print system 'nonexistant'" 'nonexistant' is not recognized as an internal or external command, operable program or batch file. 256` [download]	[reply] [d/l] [select]
Re^2: Returned Code by cdarke (Prior) on Jun 16, 2008 at 09:49 UTC
As others have said, the exit value is shifted within the $? variable. This is for historical reasons and compatibility with UNIX. 256 will be returned on an exit code of 1 (one). Incidently, this also means that Perl on Windows places an artificial limit of 0-255 on the exit code. The current directory is the second place searched for executables, the first being the directory from which the calling application was loaded.	[reply]