gistfile1.rb

#!/usr/bin/env ruby

module PwGen
  class Password
    include Enumerable

    attr_reader :let, :num

    $timestamp = Time.now.strftime("%Y %m %d %T")

    def initialize(size=6, nums=2)
      $size, $nums = size, nums

      @let = ('a'..'z').to_a
      @num = ('0'..'9').to_a

      @newpass = ''
    end

    def generate
      1.upto($size) do |i|
        @newpass << @let[rand(@let.size-1)]
      end

      1.upto($nums) do |a|
        @newpass << @num[rand(@num.size-1)]
      end

      @newpass
    end
  end

  def self.run
    puts " :  Generated : #{$timestamp} for user #{ENV['USER']}"
    puts " : Passphrase : #{Password.new(6, 2).generate}"

    puts "\n\n"
    puts 'WARNING: Your scrollback buffer contains this passphrase, please nuke this term'
  end
end

PwGen::run if $0 == __FILE__