Bot that links you to a youtube video when you first join a server

gistfile1.txt

var Discord = require('discord.js');
var client = new Discord.Client();

// Handle discord.js warnings
client.on('warn', (m) => console.log('[warn]', m));

client.on('serverNewMember', (server, user) => {
  var defChannel = server.defaultChannel;
  defChannel.sendMessage(`${user.mention()}, https://www.youtube.com/watch?v=Za2PJnCAkUA`);
});

// Email and password over command line
client.login(process.argv[2], process.argv[3]).catch((e) => console.log(e));

You need node, at least version 5, and hydra's rewrite:

npm install hydrabolt/discord.js#rewrite