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date tags
2016-05-04T14:15:24+09:00
en
rufus-scheduler
ruby

rufus-scheduler 3.2.1 released

I've just released rufus-scheduler 3.2.1.

Rufus-scheduler is a Ruby gem for scheduling pieces of code. You instantiate a scheduler and you tell it after how long you want a block of code to run or how often you want it to run.

require 'rufus-scheduler'

scheduler = Rufus::Scheduler.new

scheduler.in '3h' do
  # do something in 3 hours
end

scheduler.at '2030/12/12 23:30:00' do
  # do something at a given point in time
end

scheduler.every '3h' do
  # do something every 3 hours
end

scheduler.cron '5 0 * * *' do
  # do something every day, five minutes after midnight
  # (see "man 5 crontab" in your terminal)
end

scheduler.join
  # let the current thread join the scheduler thread

This 3.2.1 release mostly brings negative weekdays to cron strings. It lets you write crons like:

require 'rufus-scheduler'

scheduler = Rufus::Scheduler.new

scheduler.cron '5 0 * * 5L' do
  # do something every last Friday of the month, at 00:05
end

scheduler.cron '5 0 * * 4#-2,4#-1' do
  # do something every second to last and last Thursday of the month, at 00:05
end
  #
  # or
  #
scheduler.cron '5 0 * * thu#-2,thu#-1' do
  # do something every second to last and last Thursday of the month, at 00:05
end

scheduler.join

Many thanks to all the people that contributed to the development of rufus-scheduler.