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Re: [PLUG] check for existing user
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On Sun, 16 Jan 2000, you wrote:
> > What does the 1>&2 mean in that?
> > > if (grep regexp foo 1>&2 > /dev/null) ; then
>
> I think it means switch stdout and stderr, and redirect the output (stdout,
> which was previously stderr) to /dev/null so that it doesn't print anything
> on-screen. Is that correct, Tim?
>
> Bill
>
> --
> "Because they know that all they sold you was a guaranteed POS! Look, if
> you want me to take a dump in a box and mark it 'guaranteed', I will. I got
> spare time."
> -Chris Farley (on Microsoft?), _Tommy Boy_
Right, redirect stdout to stderr, then redirect to /dev/null. If your grep
sends errors to stderr and normal to stdout:
fprintf(stderr, "foo");
fprintf(stdout, "fum");
that should keep your sh script from printing the grep info to screen.
Tim
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