Test network by investigating connection to servers in different geographical locations.

network-test.rb

#!/usr/bin/env ruby

=begin

Test network by investigating connection to servers in different geographical
locations.

Prints results to stdout.

Shells out to mtr(1) (http://www.bitwizard.nl/mtr/).

=end

MTR = '/usr/sbin/mtr'

PINGS_COUNT = String 100

SITES = %w(
109.te.ua meta.ua interfax.com.ua
lenta.ru lib.ru yandex.ru
kernel.org europa.eu google.com
)

separator =  '=' * 80

mtr_version = IO.popen [MTR, '--version'] do |process|
  process.read
end

out = STDOUT

out.puts Time.now
out.puts mtr_version

SITES.each do |site|
  command = []
  command << MTR
  command << '--report'
  command << '--report-cycles' << PINGS_COUNT
  command << '--order' << 'LSRDNBAW'
  command << site

  out.puts separator
  out.puts "#{site}:"
  out.puts

  IO.popen command do |process|
    out.puts process.read
  end
end