From: Wi siong Ko <weishng@...>
Date: 2009-12-16T17:32:54+09:00
Subject: Re: Cannot obtain child process exit code on Windows

Luis Lavena wrote:
> On Dec 16, 4:18�am, Wi siong Ko <weis...@hotmail.com> wrote:
>> system('a.bat')
>> Can anyone help me?
> When reporting any issue, please include full version of Ruby (ruby -
> v) that you're using.
> 
> Here an example:
> 
> ruby 1.8.6 (2009-08-04 patchlevel 383) [i386-mingw32]
> 
> irb(main):001:0> system("echo foo && exit /b 29")
> foo
> => false
> irb(main):002:0> $?
> => #<Process::Status: pid=2296,exited(29)>
> 
> irb(main):001:0> $?
> => #<Process::Status: pid=2180,exited(0)>
> irb(main):002:0> system('foo.bat')
> => false
> irb(main):003:0> $?
> => #<Process::Status: pid=2860,exited(29)>
> 
> The exitstatus is correct, what are you trying to achieve shifting the
> Process:Status exitstatus value?


Luis,

I am using ruby 1.9.1p0 (2009-01-30 revision 21907) [i386-mswin32].
The right shifting was just trying with example given in
<http://ruby-doc.org/core-1.8.7/classes/Process/Status.html>


Following your example, the exit code is 0 if is in a batch file. Here 
is my session:

C:\>type foo.bat
exit /b 29

C:\>irb
irb(main):001:0> system("echo foo && exit /b 29")
foo
=> false
irb(main):002:0> $?
=> #<Process::Status: pid 5712 exit 29>
irb(main):003:0> system('foo.bat')

C:\>exit /b 29
=> true
irb(main):004:0> $?
=> #<Process::Status: pid 4488 exit 0>

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