Quick script, pings a host, if two pings time out in a row, run 'mtr' to pinpoint where the loss is occurring

pinger.rb

puts 'Usage: ruby ping.rb IP_TO_MONITOR' unless ARGV[0]
exit unless ARGV[0]

ip = ARGV[0]
while true
  ping = IO.popen('ping -q -c2 '+ip)
  ping_str = ping.readlines
  ping.close

  match = ping_str.join.match(/(\d) received/)
  num_received = match ? match[1] : '0'
  if num_received == '0'
    puts Time.now.to_s
    mtr = IO.popen('mtr --report -c 10 '+ip)
    puts mtr.readlines
    mtr.close
    puts ''
    STDOUT.flush
  end
end