command line to run the damned glitch script over a folder

$ for f in sourceimages/*; do ruby image-glitch.rb $f ; done

image-glitch.rb

#!/usr/bin/env ruby

#	image-glitch.rb
#	Author: William Woodruff with a very minor tweak at the end by Shawn Graham
#	------------------------
#	'Glitch' an image by repeatedly compositing it over itself at various
#	coordinates and in various fashions.
#	------------------------
#	This code is licensed by William Woodruff under the MIT License.
#	http://opensource.org/licenses/MIT

require 'rmagick'

composite_operators = [
	Magick::AddCompositeOp,
	Magick::AtopCompositeOp,
	Magick::BumpmapCompositeOp,
	Magick::ColorBurnCompositeOp,
	Magick::ColorDodgeCompositeOp,
	Magick::ColorizeCompositeOp,
	Magick::HardLightCompositeOp,
	Magick::HueCompositeOp,
	Magick::InCompositeOp,
	Magick::LightenCompositeOp,
	Magick::LinearBurnCompositeOp,
	Magick::LinearDodgeCompositeOp,
	Magick::LinearLightCompositeOp,
	Magick::LuminizeCompositeOp,
	Magick::MultiplyCompositeOp,
	Magick::PegtopLightCompositeOp,
	Magick::PinLightCompositeOp,
	Magick::PlusCompositeOp,
	Magick::ReplaceCompositeOp,
	Magick::SaturateCompositeOp,
	Magick::SoftLightCompositeOp,
	Magick::VividLightCompositeOp,
	Magick::XorCompositeOp
]

file, level = ARGV.shift(2)

if level.nil?
	level = 10
else
	level = Integer(level)
end

if file.nil?
	puts "Usage: #{$PROGRAM_NAME} <image> [glitch level]"
	exit 1
end

in_image = Magick::Image.read(file).first
out_image = in_image.dup

width = in_image.columns
height = in_image.rows

level.times do
	start_x = rand(0...width)
	start_y = rand(0...height)

	case rand(1..4)
	when 1
		out_image.composite!(in_image, start_x, start_y, composite_operators.sample)
	when 2
		out_image.composite!(in_image, -start_x, start_y, composite_operators.sample)
	when 3
		out_image.composite!(in_image, start_x, -start_y, composite_operators.sample)
	when 4
		out_image.composite!(in_image, -start_x, -start_y, composite_operators.sample)
	end
end

def filename
    random_string
  end  

  def random_string
    @string ||= "#{Time.now.strftime('%Y-%m-%d_%H-%M-%S')}.png"
  end

sleep 1

out_image.write(filename)

twitterbot source code at glitch dot com

var express = require('express'),
    fs = require('fs'),
    path = require('path'),
    request = require('request'),
    app = express(),   
    Twit = require('twit'),
    config = {
        consumer_key: process.env.CONSUMER_KEY,
        consumer_secret: process.env.CONSUMER_SECRET,
        access_token: process.env.ACCESS_TOKEN,
        access_token_secret: process.env.ACCESS_TOKEN_SECRET
    };

var T = new Twit(config);

function pick_random_image(images){
  return images[Math.floor(Math.random() * images.length)];
}

function upload_random_image_remote(urls, callback){
  console.log('Loading remote image...');

    request({url: pick_random_image(urls), encoding: null}, function (err, res, body) {
        if (!err && res.statusCode == 200) {
          var b64content = 'data:' + res.headers['content-type'] + ';base64,',
              image = body.toString('base64');
              console.log('Image loaded!');
          
            
          //post the image
          T.post('media/upload', {media_data: image}, function (err, data, response) {
            if (err){
              console.log('ERROR:');
              console.log(err);
              // response.sendStatus(500);
            }
            else{
              console.log('Now tweeting it...');

              T.post('statuses/update', {
                media_ids: new Array(data.media_id_string)
              },
                function(err, data, response) {
                  if (err){
                    console.log('ERROR:');
                    console.log(err);
                    // response.sendStatus(500);
                  }
                  else{
                    console.log('Posted an image!');
                    // response.sendStatus(200);
                  }
                }
              );
            }
          });            
        } else {
            console.log('ERROR:');
            console.log(err);
            // response.sendStatus(500);
        }
    });
}




function extension_check(url) {
/* Check if file has a known image extension, courtesy of revdancatt. */
    var extName;
    extName = path.extname(url).toLowerCase();
    return extName === ".png" || extName === ".jpg" || extName === ".jpeg";
};


app.get("/", function (request, response) {
    response.writeHeader(200, {"Content-Type": "text/html"});  
    response.write('<h1>random-image-twitterbot</h1><a href="https://glitch.com/edit/#!/random-image-twitterbot">See README.md</a></head>');  
    response.end();  
});


app.all("/tweet", function (request, response) {
  console.log("Received a request...");

  fs.readFile('./.glitch-assets', 'utf8', function (err,data) {
    if (err) {
      console.log('ERROR:');
      console.log(err);
      return false;
    }
    
    data = data.split('\n');
    var urls = [], url;

    for (var i = 0, j = data.length; i < j; i++){
      if (data[i].length){
        url = JSON.parse(data[i]).url;
        if (extension_check(url)){
          urls.push(url);
        }
      }
    }
    upload_random_image_remote(urls);
  });  
});




var listener = app.listen(process.env.PORT, function () {
  console.log('Your app is listening on port ' + listener.address().port);
});