Glitch art generator

glitchr.rb

input_file = 'input.jpg'
output_file = 'output.jpg'

def mutate(line)
  line[rand(line.length-1)] = "0"
end

File.open(input_file,'r') do |input|
  File.open(output_file,'w') do |output|
    while line = input.gets
      mutate line if rand(10) == 0
      output.puts(line)
    end
  end
end