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Posted by xhoster on March 17, 2008, 5:21 pm
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> On Mar 16, 9:10 pm, sandy_sayda...@yahoo.com wrote:
> >
> > > How do I make tftp fail if the host is bad?
It seems that that is a question for the authors of tftp, not
a Perl question. But there may be a Perl work-a-round.
> >
> > > my $rc = system( "/usr/bin/tftp bad$host < $tempFile 2>&1
> > > >/dev/null" ); if ( $rc != 0 ) {
> > > print "unable to tftp to '$host'\n";
> > > exit 1;
> > > } else {
> > > print "success: $rc\n";
> > > }
> >
> > Make sure the binary returns non-zero on failure. Try that command on
> > the command line and do "echo $?" right after.
> >
> > -sandyhttp://myperlquiz.com/
>
> It prints an error when run interactively.
Does it do that when run noninteractively? You could try capturing and
parsing its stderr. IPC::Run might be a good way. (I think it might also
help you trick tftp into thinking it is running interactively, if that is
necessary.)
> tftp does run, it just can't find the host.
> It returns 0 because it ran, didn't work but it ran. :-(
Well, that was probably a poor design decision. By that criterion, nothing
should ever exit with anything but 0. If it ran, it ran. If it didn't
run, it can't exit with anything at all.
Xho
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