diff heroku env

diff.rb

require 'set'

one = ARGV.shift
two = ARGV.shift

xs, ys = [ one, two ].map do |app_name|
  text = `heroku config -a #{app_name}`
  Set.new(text.scan(/^(\w+):/))
end 

ks = xs + ys
xs, ys = ks - ys, ks - xs

puts
puts "== #{one}"
puts xs.to_a
puts
puts "== #{two}"
puts ys.to_a
puts

__END__

$ heroku apps | grep app_name | xargs ruby diff.rb