RE: printing output of ping command -- New question at bottom.

From: Tyson Sommer (tysons_at_firstcash.com)
Date: 02/24/05 

To: "'Perl Beginners List'" <beginners@perl.org>
Date: Thu, 24 Feb 2005 08:56:17 -0600

 

> -----Original Message-----
> From: John W. Krahn [mailto:krahnj@telus.net]
> Sent: Wednesday, February 23, 2005 2:50 PM
> To: Perl Beginners
> Subject: Re: printing output of ping command -- New question
> at bottom.
>
> Tyson Sommer wrote:
> >
> > This might be a question for beginners-cgi, but since it
> was mentioned
> > here...
> >
> > I tried to use Net::Ping in a CGI script and it said I didn't have
> > permissions to run ping. I can execute the section of the
> CGI script with
> > the call to Net::Ping just fine from the cmd line as a
> regular user. If I
> > use backticks instead, the script runs just fine via the CGI. Any
> > suggestions? I'm still somewhat novice on a *nix box, so I
> don't know what
> > to change to allow ping to be run from Net::Ping via the
> CGI interface (via
> > Apache).
> >
> > Assume warnings, strictures, and that a new CGI has been
> called (everything
> > else in the script works fine), blah, blah:
> >
> > my $pinger = Net::Ping->new("icmp") || die;
> > my $device = $q->param('device');
> >
> > if( $pinger->ping($host,2) ){
> > print "$host is online\n";
> > }
> > else{
> > print "$host is offline\n";
> > }
> >
> > This gets me an error in my browser saying I don't have
> permission to run
> > ping (yes, using CGI::Carp... As well for troubleshooting).
>
>
> perldoc Net::Ping
> [snip]
> If the "icmp" protocol is specified, the ping()
> method sends an icmp
> echo message to the remote host, which is what the
> UNIX ping program
> does. If the echoed message is received from the
> remote host and the
> echoed information is correct, the remote host is
> considered reachable.
> Specifying the "icmp" protocol requires that the
> program be run as root
> or that the program be setuid to root.
>
>
> Your web server does not run as root so you have to use
> either TCP or UDP
> instead of ICMP.

That worked.

Note to self: RTFM...B (Better)

Thanks,
Tyson

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