# 

task :default => ["temp_main"]

file "temp_main" => [:all_apps]  do touch "temp_main" end

task :all_apps => [:one, :two]
task :one => ["temp_one"]
task :two => ["temp_two"]

file "temp_one" do |t|
  touch "temp_one"
end
file "temp_two" do |t|
  touch "temp_two"
end

task :clean do
  ["temp_one", "temp_two", "temp_main"].each do |file|
    rm_f file
  end
end