old_contents: require('date-utils');
  var config = require('./config'),
      fs = require('fs'),
      filename = process.argv[2] + Date.today().toFormat('YYYY-MM-DD')+'.json',
      out = fs.createWriteStream(filename),
      mongoose = require('mongoose'),
      quotes = mongoose.model('quotes', {msg: String, src: String});
  
  var escapeQuotes = function (str) {
    return str.replace(/"/g, '\\"');
  };
  
  out.on('open', function (fd) {
    mongoose.connect(config.db_uri);
    var q_stream = quotes.find().stream();
    out.write('[\n');
    q_stream.on('data', function (q) {
      out.write('{"msg": "' + escapeQuotes(q.msg) + '", "src": "' + escapeQuotes(q.src) +'"},\n');
    }).on('error', function (err) {
      throw err;
    }).on('close', function () {
      mongoose.disconnect();
      out.write(']\n');
      out.end();
      console.log('backup completed...');
      console.log('database contents have been written to ' + filename + '.');
    });
  });
  
new_contents: require('date-utils');
  var config = require('./config'),
      fs = require('fs'),
      filename = process.argv[2] + Date.today().toFormat('-YYYY-MM-DD')+'.json',
      out = fs.createWriteStream(filename),
      mongoose = require('mongoose'),
      quotes = mongoose.model('quotes', {msg: String, src: String});
  
  var escapeQuotes = function (str) {
    return str.replace(/"/g, '\\"');
  };
  
  out.on('open', function (fd) {
    mongoose.connect(config.db_uri);
    var q_stream = quotes.find().stream();
    out.write('[\n');
    q_stream.on('data', function (q) {
      out.write('{"msg": "' + escapeQuotes(q.msg) + '", "src": "' + escapeQuotes(q.src) +'"},\n');
    }).on('error', function (err) {
      throw err;
    }).on('close', function () {
      mongoose.disconnect();
      out.write(']\n');
      out.end();
      console.log('backup completed...');
      console.log('database contents have been written to ' + filename + '.');
    });
  });
  
subject: Update backup file name.