Sample shell for a rake task with namespacing and benchmarking

rake_task_example.rb

namespace :b2b2dot0 do
  namespace :magento do
    desc "Imports some stuff from one place to another"
    task :import_stuff => :environment do
      benchmark = Benchmark.measure do
        # The import stuff here
        SomeStuff.import do |stuff|
          stuff.do_something_more
        end 
      end.real
      puts "(task completed in %.2f seconds)" % t
    end
  end
end