system call exit status

jeff jeff at planetoid.net
Thu Jun 1 18:51:12 CDT 2000


~sdpm~
well the exit_value comes out to 255 and the signal_num is 0. What do they mean?

Bobby Kleemann wrote:

> ~sdpm~
> >From http://www.perl.com/pub/doc/manual/html/pod/perlfunc/system.html
>
> You can check all the failure possibilities by inspecting $? like this:
>
>     $exit_value  = $? >> 8;
>     $signal_num  = $? & 127;
>     $dumped_core = $? & 128;
>
>  _ _ _
>  Bobby Kleemann <rkleeman at neta.com>
>  http://www.neta.com/~rkleeman/
>
> On Thu, 1 Jun 2000, jeff wrote:
>
> > ~sdpm~
> > How can I decode a non-zero exit status returned from the system
> > function call?
> >
> > I'm trying the following
> >
> > my @unzip_system = ('unzip', '-d', $tmp, '-q', "$tmp/file.zip");
> > if (system(@unzip_system)) {
> >           carp "system (@unzip_system) failed ($?)";
> >           system("rm -fr $tmp");
> >           next;
> > }
> >
> > and getting the error...
> >
> > system (unzip -d /tmp/unzip.20763 -q /tmp/unzip.20763/file.zip) failed
> > (65280) at /prod/newsfeed/bin/get_news line 90
> >
> > What does the number 65280 mean?
> >
> > --
> > Jeff Saenz
> > jeff at planetoid.net
> >
> >
> > ~sdpm~
> >
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> >
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> >
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>
> ~sdpm~
>
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>
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>
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>
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>
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--
Jeff Saenz
jeff at planetoid.net


~sdpm~

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