list_rack_versions.rb

#!/usr/bin/ruby
files = Dir["reports*"]
files.each do |f|
  dir = File.join(`cat #{f}|grep DocumentRoot`.lines.first.split(/\s+/).last.split(/\//)[0..-2]) 
  rails_version = `cd #{dir}; rvm exec bundle list|grep ' rack'`.match(/\(([^)]+)\)/)[1]
  deployed_version = `cd #{dir}; cat version`
  deployed_branch = `cd #{dir}; cat config/environments/capistrano/#{f.to_s.gsub(/reports_/, '')}.rb|grep :branch`
  puts "#{f}: #{rails_version}@#{deployed_version} - #{deployed_branch}"
end

list_rails_versions.rb

#!/usr/bin/ruby
files = Dir["reports*"]
files.each do |f|
  dir = File.join(`cat #{f}|grep DocumentRoot`.lines.first.split(/\s+/).last.split(/\//)[0..-2])
  rails_gems = `cd #{dir}; rvm exec bundle list|grep ' rails'`
  if rails_gems == ""
    puts "#{f}: unknown (gem not found)"
    next
  else
    rails_version = rails_gems.match(/\(([^)]+)\)/)[1]
    puts "#{f}: #{rails_version}"
  end
end