mqtt_epoch_pub.rb

#!/usr/bin/ruby

require 'mathn'

$host = 'mqtt.example.com'
$port = 1883
$user = 'username'
$pass = 'password'

def usage
  puts "#{$0} topic"
  exit 0
end

usage if ARGV.size == 0

$topic = ARGV[0]

loop do
        t = Time.now.to_i % 10000
        num = sprintf("segd%04d", t)
        num += "." if t.prime?
        cmd = "mosquitto_pub -h #{$host} -p #{$port} -u #{$user} -P #{$pass} -t #{$topic} -m #{num}"
        puts cmd
        system cmd
        sleep 1
end