I am doing something wrong here and I don't know what. This small program is supposed to take the 4 IPv4 addresses listed and use hostent's gethost() to resolve the Domain. If it fails, it keeps the IPv4 format.
Output:
180.76.5.59 has a hostname of 180.76.5.59
199.200.9.44 has a hostname of 199.200.9.44
Then, the error I'm receiving:
Can't locate object method "137.48.78.181" via package "Net::hostent" at
./rev.pl line 19 (#1)
(F) You called a method correctly, and it correctly indicated a package
functioning as a class, but that package doesn't define that particular
method, nor does any of its base classes. See perlobj.
Uncaught exception from user code:
Can't locate object method "137.48.78.181" via package "Net::hostent" at ./rev.pl line 19.
at ./rev.pl line 17
17: if ( my $h = gethost($host) ) 19: $name = ($h->$name());
Code:
#!/usr/bin/perl
use Modern::Perl;
use Net::hostent;
use diagnostics;
my @ipaddresses = qw/ 180.76.5.59 199.200.9.44 137.48.78.181 137.48.185.207 /;
#host 137.48.78.181
foreach my $host ( @ipaddresses )
{
my $name = $host;
# my @sysArg = ("host", $host);
# system(@sysArg);
if ( my $h = gethost($host) )
{
$name = ($h->$name());
}
print "$host has a hostname of $name\n";
}
You'll notice I have commented out the system host command, when I use that it works fine but I haven't thought of a way to capture the Domain (and silence the output). Any help much appreciated.
when using system(@sysArg); I get this :
Host 59.5.76.180.in-addr.arpa not found: 2(SERVFAIL)
Host 44.9.200.199.in-addr.arpa. not found: 3(NXDOMAIN)
181.78.48.137.in-addr.arpa domain name pointer pc-78-181.hpr.unomaha.edu.
207.185.48.137.in-addr.arpa domain name pointer pki174b-01.ist.unomaha.edu.
You have a misplaced $ sigil.
This code:
$name = ($h->$name()); # WRONG
... should be:
$name = ($h->name());
Can't locate object method "137.48.78.181"
hints at this: the string value of $name
was being used as a method name.