prowl_notification.rb

#!/bin/env ruby
# -*- coding: utf-8 -*-
# prowl_notification.rb

require 'prowl'

KEY_TITLE = 'PROWL_NOTICE_TITLE'
KEY_DESC  = 'PROWL_NOTICE_DESC'
API_KEY   = 'PROWL_API_KEY'

class ProwlNotification
  def initialize
    @prowl = Prowl.new(apikey: API_KEY,
                       application: 'ProwlNotification')
  end
  def do(title, description)
    title       ||= ARGV[0] || ''
    description ||= ARGV[1] || 'process has been finished.'
    @prowl.add(event: title, description: description)
  end
end

if __FILE__ == $0
  prowl_notification = ProwlNotification.new
  prowl_notification.do(ENV[KEY_TITLE],ENV[KEY_DESC])
end

Prowl
ruby-prowl
gem install prowl