use strict;

use Time::Local;
use Net::Ping;

my ($time);
my @hostnames	= ("10.0.0.1");
my $p		= Net::Ping->new("icmp");
my $hostname;

 print "\nWriting data to ping.log\n";
 print "Press CTRL-C to exit\n";

while(1)
{
	foreach my $hostname (@hostnames)
	{
		$time = localtime;
		open (LogFile, ">>ping.log") || die "Sorry, cannot open logfile\n";
		print (LogFile "$time - ");
		print (LogFile "$hostname is ");
		print (LogFile "NOT ") unless $p->ping($hostname, 2);
		print (LogFile "reachable.\n");
		close Logfile;
		sleep(5);
	}	
}