wallet dump balance check

wbc.rb

#!/usr/bin/env ruby

## Query the balance of every address in a wallet dump/backup
## $ bitcoin-cli dumpwallet ~/wallet.dump
## $ ./wbc.rb ~/wallet.dump

require 'open-uri'

satoshi = 0.00000001
addresses = File.open(ARGV[0]).read.gsub("\n"," ").split.map{|a| a.split('=')}.select{|a| a[0]=='addr'}.map{|a|a[1]}
puts "Checking balances of #{addresses.size} addresses with blockchain.info"
addresses.map!{|a| [a,open("https://blockchain.info/q/addressbalance/#{a}").read.to_i]}
addresses.sort{|a| a[1]}.each {|a| puts "#{a[0]} #{a[1]*satoshi}" }
total = addresses.reduce(0){|t,a| t+a[1]}
puts "Total: #{total*satoshi}BTC"