On Dec 3, 2007 5:32 PM, Judson Lester <nyarly / gmail.com> wrote:
> Jan,
>
> You might look at popen3 in the standard library.  I don't think it quite
> does what you need (since it returns an array if three pipes: stdin, stdout
> and stderr for the subprocess) but the code is short if a little arcane, and
> might point you in the right direction to figure this out.
>
> Judson
>
>
> On Dec 2, 2007 3:10 AM, Jan Koprowski <Jan.Koprowski / gmail.com> wrote:
>
> > Hi !
> >
> >   I try to run command system and get streams handlers to 0 (stdin),
> > 1(stdout), 2(stderr), 3(myOwnStdIn1), 4(myOwnStdIn2). I do something
> > like that in PHP by proc_open and table of pipes, but here I don't
> > know how I can get handlers to process streams. I know that this code
> > is bad but I think something like this:
> >
> > process = popen('command', 'w+');
> > stdin = process.new(0, "w");
> > stdout = process.new(1, "r");
> >
> > etc...
> >
> > But new is a static method. What i should to do ?
> >

Also take a look at open4 and systemu. You can find both at the
codeforpeople project on RubyForge. They, too, will offer some good
insight on what you want to do, though neither does precisely what you
need.

<http://rubyforge.org/projects/codeforpeople>

Blessings,
TwP