Discover gists

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。Docker 官方和国内很多云服务商都提供了国内加速器服务。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

配置加速地址

Ubuntu 16.04+、Debian 8+、CentOS 7+

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

实例

例1（小米米官网）：font: 14px/1.5 "Helvetica Neue",Helvetica,Arial,"Microsoft Yahei","Hiragino Sans GB","Heiti SC","WenQuanYi Micro Hei",sans-serif;
例2（淘宝技术研发中心）：font: 12px/1.5 tahoma,arial,'Hiragino Sans GB','\5b8b\4f53',sans-serif;
例3（加网）：font: 14px/1.5 'Microsoft YaHei',arial,tahoma,\5b8b\4f53,sans-serif;
例4（淘宝UED）：font: 12px/1 Tahoma,Helvetica,Arial,"\5b8b\4f53",sans-serif;
例5（一淘UX）:font-family: Helvetica, 'Hiragino Sans GB', 'Microsoft Yahei', '微软雅黑', Arial, sans-serif;
例6（简书）：font-family: "lucida grande", "lucida sans unicode", lucida, helvetica, "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;


	/**
	* @param {string} rootPath
	* @returns {Generator<string>}
	*/
	function* walk(rootPath) {
	for (const entry of fs.readdirSync(rootPath, { withFileTypes: true })) {
	const filePath = path.join(rootPath, entry.name);
	if (entry.isDirectory()) yield* walk(filePath);
	else yield filePath;

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Alpine.js-TailwindCSS-Lightbox-Modal</title>
	<link href="https://unpkg.com/tailwindcss@^1.0/dist/tailwind.min.css" rel="stylesheet">
	<script src="https://cdn.jsdelivr.net/gh/alpinejs/alpine@v2.x.x/dist/alpine.min.js" defer></script>
	</head>
	<body>

	import numpy as np
	import numpy.linalg

	# Relevant links:
	# - http://stackoverflow.com/a/32244818/263061 (solution with scale)
	# - "Least-Squares Rigid Motion Using SVD" (no scale but easy proofs and explains how weights could be added)


	# Rigidly (+scale) aligns two point clouds with know point-to-point correspondences
	# with least-squares error.


	function main {

	Update-Windows-Configuration

	Install-Utils

	Install-Browsers

	Install-Fonts

Discover gists

Docker Hub 镜像加速器

配置加速地址

PSQL

Docker CE Install

Docker CE Install

实例

HTML，CSS，font-family：中文字体的英文名称

通用