scratchoo

Create Bridge interface on the host and give internet access

sudo ip link add name br0 type bridge
sudo ip addr add 172.20.0.1/24 dev br0
sudo ip link set dev br0 up
sudo sysctl -w net.ipv4.ip_forward=1
sudo iptables --table nat --append POSTROUTING --out-interface enp3s0 -j MASQUERADE
sudo iptables --insert FORWARD --in-interface br0 -j ACCEPT

Create a tap device and link to the bridge

scratchoo

require "open3"

def execute_shell(command, verbose: false)
  Rails.logger.info "[SHELL] #{command}"

  # see: https://nickcharlton.net/posts/ruby-subprocesses-with-stdout-stderr-streams.html
  # see: http://stackoverflow.com/a/1162850/83386
  output = []
  Open3.popen3(command) do |stdin, stdout, stderr, thread|
    # read each stream from a new thread

scratchoo

#!/usr/bin/env bash

apt_wait () {
  while sudo fuser /var/lib/dpkg/lock >/dev/null 2>&1 ; do
    sleep 1
  done
  while sudo fuser /var/lib/apt/lists/lock >/dev/null 2>&1 ; do
    sleep 1
  done
  if [ -f /var/log/unattended-upgrades/unattended-upgrades.log ]; then

scratchoo

Community

• Elixir Slack Group

Cheatsheets

• GenServer Cheatsheet by Benjamin Tan Wei Hao

Books

scratchoo

{
   "💍":"diamond | engagement ring | diamond ring | diamond rings | diamonds | engagement rings",
   "🆎":"blood type AB",
   "❣":"heart",
   "🇱🇨":"Saint Lucia | Saint Lucian flag",
   "🇮🇪":"Ireland | Irish flag",
   "🇨🇮":"Côte d’Ivoire | Ivory Coast | Ivorian flag",
   "💎":"diamond | gem | gemstone | jewel | diamonds | gems | gemstones | jewels",
   "☠️":"skull and crossbones | poison | poisonous",
   "👩‍💻":"technology worker | tech worker | technologist | techie | IT worker | Apple genius | woman in technology | woman tech worker | woman technologist | woman IT worker | woman in IT | woman Apple genius",

scratchoo

Model.where(:date_column => date)

Model.where('extract(year  from date_column) = ?', desired_year)
Model.where('extract(month from date_column) = ?', desired_month)
Model.where('extract(day   from date_column) = ?', desired_day_of_month)

scratchoo

scratchoo

/**
* This is ported from Rangy's selection save and restore module and has no dependencies.
* Copyright 2019, Tim Down
* Licensed under the MIT license.
*
* Documentation: https://github.com/timdown/rangy/wiki/Selection-Save-Restore-Module
* Use "rangeSelectionSaveRestore" instead of "rangy"
*/
var rangeSelectionSaveRestore = (function() {
    var markerTextChar = "\ufeff";

scratchoo

//Here's an eye catching example to get your visitors back when your web page tab is not active within the browser (onblur). This script will animate the original title text with an intro, the original title text is restored when the tab is returned to active state (focus). When the tab is clicked the original page title is restored. For social media sharing it is highly recommended to include the original page title text with the prefaced animated text (onblur).
//Created by SHEmedia.us

$(function() {

    var origTitle, animatedTitle, timer;

    function animateTitle(newTitle) {
      var currentState = false;
      origTitle = document.title;  // save original title

scratchoo

require 'rubygems'
require 'faraday'
require 'socksify'
require 'socksify/http'
require 'awesome_print'

# This is a SOCKS monkey patch for Faraday, with example use/unit test.
# Notes:
#    * It is altered to work with SOCKS5 authentication.
#    * net_http_class must return a Faraday::Adapter::NetHttp instance.