Gemfile

source 'http://rubygems.org'

gem 'i18n'
gem 'activesupport', '>= 2.3.5'
gem 'octokit', '~> 0.6.0'


group :development do
  gem 'cucumber', '>= 0'
  gem 'bundler', '~> 1.0.0'
  gem 'jeweler', '~> 1.5.2'
  gem 'rcov', '>= 0'
end

github-archive-repos.rb

require 'rubygems'
require 'bundler/setup'
require 'octokit'
require 'active_support/core_ext'

@username = 'fs'

def client
  @client ||= Octokit::Client.new(:login => '', :token => '')
end

def repositories
  @repositories ||= client.repositories(@username, :private => true)
end

def expired?(repo, ttl = 12.month)
  client.branches(repo).each do |branch|
    if DateTime.now.to_i - client.commits(repo, branch.first, :page => 1).first.committed_date.to_datetime.to_i < ttl
      return false
    end
  end

  true
end

repositories.each do |repo|
  puts repo.name if repo.private? && expired?(repo)
end