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Re: reciproc pipe()


From: William Park
Subject: Re: reciproc pipe()
Date: Mon, 05 Sep 2005 00:15:47 -0400
User-agent: tin/1.6.2-20030910 ("Pabbay") (UNIX) (Linux/2.6.12-smp (i686))

Robert Millan <address@hidden> wrote:
> 
> Hi!
> 
> Is there any way to tell bash to do something like this?  If there isn't, I
> think it would be nice to have it (maybe through a builtin or something).
> 
> int p1[2];
> int p2[2];
> 
> pipe(p1);
> pipe(p2);
> 
> if (fork () == 0)
>   {
>     close (0); dup (p1[0]);
>     close (1); dup (p2[1]);
>     exec(whatever);
>   }
> 
> if (fork () == 0)
>   {
>     close (0); dup (p2[0]);
>     close (1); dup (p1[1]);
>     exec(whatever);
>   }
> 
> I.e, each process communicates with the other via stdin/stdout, and we get the
> actual results via stderr.

Where would you use it?

-- 
William Park <address@hidden>, Toronto, Canada
ThinFlash: Linux thin-client on USB key (flash) drive
           http://home.eol.ca/~parkw/thinflash.html
BashDiff: Super Bash shell
          http://freshmeat.net/projects/bashdiff/
.




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