lancevo

Set up Let's Encrypt with Nginx and Node

This guide to install SSL cert on Nginx as a reverse proxy, and forward the request to a node app

Install certbot

https://www.nginx.com/blog/using-free-ssltls-certificates-from-lets-encrypt-with-nginx/

$ apt-get update
$ sudo apt-get install certbot
$ apt-get install python-certbot-nginx

lancevo

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

lancevo

function filterInPlace(array, condition) {
  let iOut = 0;
  for (let i = 0; i < array.length; i++) {
    if (condition(array[i])) {
      array[iOut++] = array[i];
    }
  }

  array.length = iOut;
}

lancevo

ShadowDom

• Quick Start
• About
• API

Quick Start

In the index.js or the root file of your cypress/support folder,

lancevo

function changeMac() {
  local mac=$(openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//')
  sudo ifconfig en0 ether $mac
  sudo ifconfig en0 down
  sudo ifconfig en0 up
  echo "Your new physical address is $mac"
}

lancevo

Objects Sorter:

Sort objects by property name. It detects property type such as number, string, and date and sort them properly.

Usage

var models = [

lancevo

(function(window){
  'use strict';
  function getQuery(query){
    var args = decodeURIComponent(location.search).substring(1).split('&');
    var argsParsed = {};
    var i, arg, kvp, key, value;
    for (i=0; i < args.length; i++) {
      arg = args[i];
      if (-1 === arg.indexOf('=')) {
        argsParsed[decodeURIComponent(arg).trim()] = true;

lancevo

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

lancevo

module.exports = function atob(a) {
    return new Buffer(a, 'base64').toString('binary');
};

lancevo

// Separate numbers to a group of 3 and add a comma

'123456'.replace(/(\d)(?=(\d{3})+(?!\d))/g, "$1,"); // output: 123,456