Ying Li CoolRice

Mounting VirtualBox shared folders on Ubuntu Server 18.04 LTS (Bionic Beaver)

This guide will walk you through the steps on how to setup a VirtualBox shared folder inside your Ubuntu Server guest.

Prerequisites

This guide assumes that you are using the following setup:

Oracle VM VirtualBox version 6.0.10 with Extension Pack installed
Microsoft Windows 7 SP1 as the host OS
A fresh install of Ubuntu Server 18.04.2 LTS as the guest OS

You could still make this guide work with other setups (possibly with some modifications to the commands and whatnot).

What does `NODE_ENV=production` do?

Setting NODE_ENV=production causes these libraries and tools to behave as follows:

npm:

yarn:

Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like:

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	#!/bin/bash
	set -eu

	SYSCTL_FILE=/etc/sysctl.d/90-tcp-bbr.conf

	# check root
	if [[ $EUID -ne 0 ]]; then
	echo "This script must be run as root"
	exit 1
	fi

	:80
	root /usr/src/wordpress
	gzip
	fastcgi / wordpress:9000 php
	rewrite {
	if {path} not_match ^\/wp-admin
	to {path} {path}/ /index.php?_url={uri}
	}
	log stdout
	errors stderr

	var Middleware = function() {};

	Middleware.prototype.use = function(fn) {
	var self = this;

	this.go = (function(stack) {
	return function(next) {
	stack.call(self, function() {
	fn.call(self, next.bind(self));
	});