From: Daniel Bretoi <lists@...>
Date: 2003-01-24T08:04:39+09:00
Subject: Re: exit status, stderr and stdout

Hi Nobu,

Thanks for clarifying these things for me. 

Is there documentatino for popen3 I can reference?

I;m still not able to obtain the results you are, however:

[~]$ ruby -v
ruby 1.6.8 (2002-12-24) [i386-linux]

[~]$ ruby -ropen3 -e 'min,out,err = Open3.popen3("ls
---");Process.wait;p $?>>8'
-e:1:in `wait': No child processes (Errno::ECHILD)
        from -e:1

and same thing for:

[~]$ ruby1.7 -ropen3 -e 'min,out,err = Open3.popen3("ls
---");Process.wait;p $?>>8'
-e:1:in `wait': No child processes (Errno::ECHILD)
        from -e:1



Which version of ruby are you running? Any idea what might be wrong
here?

Daniel


On Fri, Jan 24, 2003 at 07:45:15AM +0900, nobu.nokada@softhome.net wrote:
> Hi,
> 
> At Fri, 24 Jan 2003 07:26:34 +0900,
> Daniel Bretoi wrote:
> > min,out,err = Open3.popen3("ls ---");
> 
> Did you "Process.wait" here?
> 
> > p  $? >> 8
> > 
> > => 255
> 
> $ ruby -ropen3 -e 'min,out,err = Open3.popen3("ls ---");p $?'
> nil
> [nobu@sharui:~/src/ruby/rough/lib/testunit 07:42:40]
> $ ruby -ropen3 -e 'min,out,err = Open3.popen3("ls ---");Process.wait;p $?>>8'
> 1
> 
> $? won't be set until Process.wait return.
> 
> -- 
> Nobu Nakada

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