use strict;
use warnings;
use Net::Ping;
use CGI qw/:standard/;

my @hosts;
if ( -e "ship.cfg" ) {
        open (CFGFILE, "ship.cfg") || die;
        @hosts=<CFGFILE>;
        close (CFGFILE);
} else {
        # Enter your hosts here...
        @hosts = qw/host1 host2 host3/;
}

my @uphosts=();
my @downhosts=();
my $proto;
my @verbage=("are", "hosts", "are", "hosts");

my $p = Net::Ping->new('udp');

foreach my $host(@hosts) {
        chomp($host);
        if ($p->ping($host)) {
                push (@uphosts, $host);
        } else {
                push (@downhosts, $host);
        }
}

$p->close();
print start_html,br;
print header,br;
print start_form,br;
print submit('Refresh'),p;

if (scalar(@downhosts) == 1 ) {
        $verbage[2]="is";
        $verbage[3]="host"
}
if (scalar(@uphosts) == 1 ) {
        $verbage[0]="is";
        $verbage[1]="host";
}

unless (scalar(@downhosts) == 0) { print p,"There $verbage[2] ",scalar(@downhosts),"  $verbage[3] down",br }
print "There $verbage[0] ",scalar(@uphosts)," $verbage[1] alive",br;

print p,"The following $verbage[1] $verbage[0] alive: \n",br;
foreach my $uitem (sort @uphosts) {
        print li("$uitem"),br;
}
unless (scalar(@downhosts) == 0) { print p,"The following $verbage[3] $verbage[2] down: ",br }
foreach my $ditem (sort @downhosts) {
        print li("$ditem"),br;
}