cron + curl with only Ruby

clock.rb

require 'rubygems'
require 'clockwork'
include Clockwork

require 'net/http'
require 'uri'

handler do |job|
  res = Net::HTTP.get_response URI.parse('http://foobar')
  puts "#{Time.now},#{res.code}"
end

every(59.minutes, '')

Gemfile

source 'https://rubygems.org'

gem 'clockwork'

run.sh

bundle install
bundle exec clockwork clock.rb