Alex Ellis alexellis

TL;DR

Create 10GB FreeBSD image using QEMU.
Run the VM using xhyve.
Mount host directory.
Resize the image.

Requisites

OSX
Homebrew

Setting up Pi Zero OTG - The quick way (No USB keyboard, mouse, HDMI monitor needed)

More details - http://blog.gbaman.info/?p=791

For this method, alongside your Pi Zero, MicroUSB cable and MicroSD card, only an additional computer is required, which can be running Windows (with Bonjour, iTunes or Quicktime installed), Mac OS or Linux (with Avahi Daemon installed, for example Ubuntu has it built in).
1. Flash Raspbian Jessie full or Raspbian Jessie Lite onto the SD card.
2. Once Raspbian is flashed, open up the boot partition (in Windows Explorer, Finder etc) and add to the bottom of the config.txt file dtoverlay=dwc2 on a new line, then save the file.
3. If using a recent release of Jessie (Dec 2016 onwards), then create a new file simply called ssh in the SD card as well. By default SSH i

The Problem

See Docker issue #24834 for the more complete background. The short story is that if lxcfs is installed (which it is by default in Ubuntu 16.04) and you attempt to use the Docker daemon with user namespaces enabled, most likely you will end up with a confusing "container command could not be invoked error" like the one here:

# docker run --rm busybox date
docker: Error response from daemon: Container command 'date' could not be invoked..

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

Simple Webhook Tutorial

In this tutorial, I will be explaining how to set up a simple webhook to relay your tweets to a Discord channel

Step 1 - Register on Zapier

Go to https://zapier.com/ and create an account (if you don't already have one).

Step 2 - Make a Discord Webhook

Find the Discord channel in which you would like to send Tweets

	package main

	import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
	)

	func main() {

	package main

	import (
	"flag"
	"fmt"
	"os"
	"time"

	"github.com/gocql/gocql"
	"github.com/nats-io/nats"

	var express = require('express')
	var router = express.Router()
	var qs = require('qs')

	function login (req, res) {
	const query = qs.parse(req.query)
	req.session.alexa = query // store the variables for the redirect URI after successful login
	res.render('login')
	}

	package main

	// @lizrice, mostly copied from @doctor_julz: https://gist.github.com/julz/c0017fa7a40de0543001

	import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
	)

	#option 1: copy and paste this into ssh to install docker engine
	# NOTE: update --label=owner=YOURNAME below if you want to easily identify yours

	apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D && \
	mkdir -p /etc/apt/sources.list.d && \
	echo deb https://apt.dockerproject.org/repo ubuntu-xenial main > /etc/apt/sources.list.d/docker.list && \
	printf 'net.ipv4.neigh.default.gc_thresh1 = 30000\nnet.ipv4.neigh.default.gc_thresh2 = 32000\nnet.ipv4.neigh.default.gc_thresh3 = 32768' >> /etc/sysctl.conf && \
	sysctl -p && \
	service lxcfs stop && apt-get remove -y -q lxc-common lxcfs lxd lxd-client && \
	apt-get update -q && apt-get install -y -q linux-image-extra-$(uname -r) linux-image-extra-virtual && \