Date: Mon, 22 Oct 2001 03:02:33 -0400 (EDT) From: Joe Clarke <marcus@marcuscom.com> To: Matthew Blacklow <matthew.blacklow@ticca.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: C clue on FreeBSD Message-ID: <20011022030129.C11121-100000@shumai.marcuscom.com> In-Reply-To: <20011022025459.X11121-100000@shumai.marcuscom.com>
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On Mon, 22 Oct 2001, Joe Clarke wrote:
>
>
> On Mon, 22 Oct 2001, Matthew Blacklow wrote:
>
> > Hi all,
> > I am running FreeBSD and am trying to learn C. I have a program at the
> > moment which using C's "system" function launches a FreeBSD application. The
> > problem is that it outputs to the screen all the output of the spawned
> > process. I need to know how to supress the output of this process. I have
> > looked through many C programming books and on the web and cant seem to find
> > what i am looking for.
>
> Try:
>
> system("/my/app 2>&1 >/dev/null");
Sorry, I should have said:
system("/my/app >/dev/null 2>&1");
For some reason (there may be a good one, though I don't know what it is),
the shell doesn't redirect stderr in the first example.
Joe
>
> That will redirect all stdout and stderr to /dev/null, thus making your
> program silent.
>
> Joe
>
> >
> > All help appreciated
> >
> >
> > Thanks,
> > Matthew
> >
> >
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> >
> >
>
>
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