#!/usr/bin/perl
=pod

=head1 NAME

resolveip - Resolve IP address for given hostname

=head1 DESCRIPTION

Tries to resolve IP address of given hostname and return its value,
returns empty value if unable to detect it.

=cut

use Socket;
$hostname = $ARGV[0];

sub resolve_ip {
	($hostname) = @_;

	return unless defined $hostname;

	$packed_ip = gethostbyname($hostname);
	if (defined $packed_ip) {
		$ip_address = inet_ntoa($packed_ip);
		return $ip_address;
	}
}

$ip = resolve_ip($hostname);

if (not $ip or $ip eq '') {
	print STDERR "Unable to detect ip address for host: '$hostname'\n";
	exit 1;
}

print $ip;

exit 0;