Made specifically for a Trello project, this script will troll through your Trello JSON export data and pick out the names of your Trello cards and Lists, and save them to a new file.

trello_lindy_json_to_file.rb

#! /usr/bin/ruby

# This file is intended to be used for a specific trello project, but the principle
# displayed here of extracting data from a trello json export file can be used in
# a wide variety of ways.  Edit this file to your heart's content!
#
# Put this file in the same folder as "lindy-hop-thesaurus.json" (or whatever your
# Trello export file is called... and run it from the command line like this:
#
#   ruby print_json.rb lindy-hop-thesaurus.json
#
# It will output a file in the same directory called "data.txt" that contains the
# information you desire


require 'json'
require 'pp'

json = File.read ARGV[0]
hash = JSON.parse json

File.open('data.txt', 'w') do |file|

  hash['cards'].each do |card|
    file.write card['name'] + "\n"
  end

  file.write "\n"

  hash['lists'].each do |list|
    file.write list['name'] + "\n"
  end

end