$baseIP = "10.0.5.";
$j = 1;

until ($j == 255) {
  $string = $baseIP.$j;
  $input = "-w 50 -n 1 ".$string." |find  /V \"Received\" |find /V \"Ping\" |find /V \"A\"";
  system("ping $input >> ping.txt");
  $j++;
  print "$j\n";
}

open(RESULTS2, "ping.txt") || die;
open(RESULTS, ">ping.txt") || die;
@results = <RESULTS2>;
close(RESULTS2);
$j = 1;
$a = 0; $f = 0;
while (@results) {
  if (m/Reply/) {
    $output[$j] = $baseIP.$j.": Alive\n";
    $j++; $a++;
  } elsif (m/Request/) {
    $output[$j] = $baseIP.$j.": Dead\n";
    $j++; $f++;
  } else {
  }
}

print RESULTS "Pinger Results:\n\n";
print RESULTS "Alive Nodes: $a\n";
print RESULTS "Dead Nodes: $f\n";
print RESULTS "\n\nDetailed Results:\n";
print RESULTS @output;
close(RESULTS);