#!/usr/bin/ruby

require 'open-uri'
require 'json'

json = JSON.parse File.read open 'https://a.4cdn.org/biz/catalog.json'

smg_thread = json.map{|page| page['threads']}.flatten.select{|thread| thread['sub'] =~ /\/smg\// }[0]

`open http://boards.4chan.org/biz/thread/#{smg_thread['no']}`