rufus-scheduler timing task example

This stuff is a bit similar to flask's apscheduler and crontab under Linux. If you want to use it, you need to install the rufus-scheduler dependency first. 

gem install rufus-scheduler

 Then write the scheduled task (if you want to run the script directly, remember to add scheduler.join at the end to take effect) .

require 'rubygems'
require 'rufus/scheduler'

scheduler = Rufus::Scheduler.new

scheduler.in '20m' do
  # after 20 minutes
  puts "hello world 1"
end

scheduler.at 'Thu Mar 26 07:31:43 +0900 2009' do
  # at the appointed time
  puts 'hello world 2'
end

scheduler.cron '0 22 * * 1-5' do
  # every day of the week at 22:00 (10pm)
  puts 'hello world 3'
end

scheduler.every '5m' do
  # every 5 minutes
  puts 'hello world 4'
end

scheduler.join