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How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

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If you're using a high-end bluetooth headset on your Macbook Pro it's likely your mac is using an audio codec which favors battery efficiency over high quality. This results in a drastic degradation of sound, the SBC codec is the likely culprit, read more about it here.

Find out what codec you're using

1. Play a song on your headphones
2. Option (⌥) click the Bluetooth button at the top of your screen
3. If you're using AAC or aptX, you can stop here—those are the highest quality codecs.

Change your codec to AAC or aptX

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    # Usage:
    #   aws cloudformation --region <region> create-stack --stack-name <stack name> --template-body file://vpc-fargate.yaml
    
    # This template will:
    #   Create a VPC with:
    #       2 Public Subnets
    #       2 Private Subnets
    #   An Internet Gateway (with routes to it for Public Subnets)
    #   A NAT Gateway for outbound access (with routes from Private Subnets set to use it)
    #     

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#!/bin/sh

aws cloudformation deploy \
  --template-file stack.yaml \
  --stack-name edge-lambda-test \
  --capabilities CAPABILITY_IAM \
  --parameter-overrides Nonce=$RANDOM

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// sloppy traceroute clone
// inpired by https://blogs.oracle.com/ksplice/entry/learning_by_doing_writing_your
// and made possible by https://www.npmjs.org/package/raw-socket

var raw = require('raw-socket');
var dns = require('dns');

var target = process.argv[2] || '173.230.146.29';
var MAX_HOPS = 64;
var TIME_LIMIT = 5000;

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Switching to DNS over TLS on macOS

How to configure your Mac to use DNS over TLS in five easy steps:

1. Install Stubby with Homebrew (https://dnsprivacy.org/wiki/display/DP/DNS+Privacy+Daemon+-+Stubby):

    brew install stubby
   

2. Edit the configuration file:

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var duracionTrabajos = {
  pared: 1000,
  piso: 2000
};

var arregloCasas = [
  {
    paredes: 5,
    pisos: 5
  },

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var User = (function () {
    function User (id, nam) {
        var self = this;

        this.id = id;
        this.nam = nam;

        this.__data = {};

        for(var p in self) {

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FFmpeg Cheat Sheet for 360º video

Brought to you by Headjack

 
FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.

 
Let's start with some basics:

• ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file

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A quick overview of the node.js streams interface with basic examples.

This is based on @brycebaril's presentation, Node.js Streams2 Demystified

Overview

Streams are a first-class construct in Node.js for handling data.

Think of them as as lazy evaluation applied to data.