passing in arguments in rake task

rake task arg

desc "my task do something"
task :do_something => :environment do
  options = {}
  $*.each {|arg| options[arg.split(":")[0]] = arg.split(":")[1]}
  options.reject! {|k,v| v == "" || v.nil? }
  # I now have {"setting" => "WHATEVER", "user" => "me"}
  # for whatever I want to do.
  # ...
end