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user www-data;
worker_processes 4;

error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;

events {
  worker_connections 1024;
}

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if (window.location.href == "https://www.youtube.com/feed/channels") {
	let rssText = [...document.querySelectorAll("#main-link.channel-link")].map((e) => {
 	       const [, a, b] = e.href.match("/((?:user)|(?:channel))/(.*)$");
 	       return "https://www.youtube.com/feeds/videos.xml?" + (a === "user" ? "user=" : "channel_id=") + b;
 	   }).join("\n")
 	if (rssText) {
		navigator.clipboard.writeText(rssText).then(
 		   () => alert("A list of channel RSS feeds has been copied to the clipboard. \nPaste these into rssmix.com to generate a single RSS feed, or opml-gen.ovh to generate an OPML file.")
		).catch(
		    () => {

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OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

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// Create a Promise that resolves after ms time
var timer = function(ms) {
  return new Promise(resolve => {
    setTimeout(resolve, ms);
  });
};

// Repeatedly generate a number starting
// from 0 after a random amount of time
var source = async function*() {

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# get total requests by status code
awk '{print $9}' /var/log/nginx/access.log | sort | uniq -c | sort -rn

# get top requesters by IP
awk '{print $1}' /var/log/nginx/access.log | sort | uniq -c | sort -rn | head | awk -v OFS='\t' '{"host " $2 | getline ip; print $0, ip}'

# get top requesters by user agent
awk -F'"' '{print $6}' /var/log/nginx/access.log | sort | uniq -c | sort -rn | head

# get top requests by URL

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Deploy nodejs app with gitlab.com and pm2

This manual is about setting up an automatic deploy workflow using nodejs, PM2, nginx and GitLab CI. It is tested on:

• Target server: Ubuntu 16.04 x64. This is suitable for Ubuntu 14.x.
• Windows 10 on my PC to work.

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node_modules
dist/
yarn.lock
wwwroot

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node_modules
dist/
yarn.lock
wwwroot

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import { ApolloServer, gql } from 'apollo-server-micro';

const typeDefs = gql`
  type Query {
    sayHello: String
  }
`;

const resolvers = {
  Query: {

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000