Script to generate a histogram of GitHub issue age

hissuegram.rb

#!/usr/bin/env ruby

# Usage: GITHUB_TOKEN=yourtoken hissuegram.rb owner/repo

require "octokit"

client = Octokit::Client.new(:access_token => ENV["GITHUB_TOKEN"], :auto_paginate => true)
issues = client.issues ARGV[0], :state => :open

dates = issues.map { |i| i["created_at"] }
days_ago = dates.map { |d| ((Time.now - d) / (60 * 60 * 24)).round }
buckets = days_ago.group_by { |d| d / 7 }.map { |bucket, contents| [bucket, contents.length] }.sort

puts sprintf("%10s %7s", "weeks ago", "count")
puts buckets.map { |bucket, count| sprintf("% 10d % 7d %s", bucket, count, "=" * count) }.join("\n")