Password generator using a quantum random number generator

qpasswd

#!/usr/bin/env ruby

# qpasswd - password generator from quantum RNG

require 'open-uri'

rng = 'https://qrng.anu.edu.au/wp-content/plugins/colours-plugin/get_block_alpha.php'
ARGV.size < 1 ? pw_size = 16 : pw_size = ARGV[0].to_i
data = open(rng).read.strip.split('')
output = data.sample(pw_size)
puts output.join