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ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

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+

Commit Message Conventions

These rules are adopted from the AngularJS commit conventions.

Goals
Generating CHANGELOG.md
- Recognizing unimportant commits
- Provide more information when browsing the history
Format of the commit message
Subject line

Exploiting the Blob Cache in Minecraft: Bedrock Edition

...and why it matters.

Preface

You might have seen my HiveCorruptor plugin on Poggit. To be clear, I don't have a vendetta against The Hive or anything like that, the plugin was more so a comedic demonstration of how the blob cache can be exploited to crash clients. The next thing you're probably thinking is "how the hell does this work?" - and this is what this article will go over.

Introduction

Migrating a Rails project from MySQL to PostgreSQL

This brief guide is written from my own experience with migrating a large (~5GB) MySQL database to PostgreSQL for a Rails project.

No warranties, guarantees, support etc. Use at your own risk and, as always, ENSURE YOU MAKE BACKUPS FIRST!

I chose [pgloader][1] because it's extremely fast. YMMV.

Replace mysql2 gem with pg in Gemfile.
Update config/database.yml for PostgreSQL. I used [Rails' template][2] as a starting point.

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Note: many newer Keychron keyboards use QMK as firmware and most tips here do not apply to them. Maybe the ones related to Bluetooth can be useful, but everything related to Apple's keyboard module (hid_apple) on Linux, won't work. As far as I know, all QMK-based boards use the hid_generic module instead. Examples of QMK-based boards are: Q, Q-Pro, V, K-Pro, etc.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work (NOT FOR QMK-BASED BOARDS)

Older Keychron keyboards (those not based on QMK) use the hid_apple driver on Linux, even in the Windows/Android mode, both in Bluetooth and Wired modes.

	# This script will manually rip out all VMware Tools registry entries and files for Windows 2008-2019
	# Tested for 2019, 2016, and probably works on 2012 R2 after the 2016 fixes.

	# This function pulls out the common ID used for most of the VMware registry entries along with the ID
	# associated with the MSI for VMware Tools.
	function Get-VMwareToolsInstallerID {
	foreach ($item in $(Get-ChildItem Registry::HKEY_CLASSES_ROOT\Installer\Products)) {
	If ($item.GetValue('ProductName') -eq 'VMware Tools') {
	return @{
	reg_id = $item.PSChildName;

	/**
	* A PWM example for the ATmega328P using the 8-Bit Fast PWM mode.
	*/
	#include <avr/io.h>
	#include <avr/interrupt.h>
	#include <stdbool.h>
	#include <util/delay.h>

	int main (void) {

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Delete Boxes</title>
	<style>.box { width:100px; height:100px; background-color:lightblue; margin:10px; display:inline-block; text-align:center; line-height:100px; }</style>
	</head>
	<body>
	<select id="boxSelect"></select>