desc <<-DESC
  Show a progress-bar for in-progress operations. Blocks until 100% is
  reached.
  
  When you create, alter or delete an entity, resulting in operations
  necessary for the changes to take effect, like software installation and/or
  configuration -- be it on one or several of your VPS's, and/or in our
  registries -- these operations are started processing in the background on
  our end.
  
  This task lets you know how much of these are left to do (roughly), and when
  they are all done (accurately).
DESC
task :progress do
  key, bar = nil, Utilities::ProgressBar.new("Progress", 100, $stdout)
  loop do
    progress = Progress.first(:key => key)
    bar.set(progress.percent)
    break if progress.percent >= 100
    key = progress.key
    sleep 2
  end
  bar.finish
end