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Enable `systemd` in WSL 2

**NOTE: If you have Windows 11 there is now an official way to do this in WSL 2, use it if possible - see MS post here (WINDOWS 11 ONLY)**

This guide will enable systemd to run as normal under WSL 2. This will enable services like microk8s, docker and many more to just work during a WSL session. Note: this was tested on Windows 10 Build 2004, running Ubuntu 20.04 LTS in WSL 2.

To enable systemd under WSL we require a tool called systemd-genie
Copy the contents of install-sg.sh to a new file /tmp/install-sg.sh:

NB: This document describles a 'Old-School' way of using Yubikey with SSH

Modern OpenSSH has native support for FIDO Authentication. Its much simpler and should also be more stable with less moving parts. OpenSSH also now has support for signing arbitary files witch can be used as replacement of gnupg. Git also supports signing commits/tags with ssh keys.

Pros of FIDO

Simpler stack / less moving parts
Works directly with ssh, ssh-add and ssh-keygen on most computers
Simpler
Private key can never leave the FIDO device

Cons of FIDO

Install and Create Emulators using AVDMANAGER and SDKMANAGER

TL;DR

For an emulator that mimics a Pixel 5 Device with Google APIs and ARM architecture (for an M1/M2 Macbook):

List All System Images Available for Download: sdkmanager --list | grep system-images
Download Image: sdkmanager --install "system-images;android-30;google_atd;arm64-v8a"

GnuPG 2.2.x Build Instructions

Below are my build instructions for GnuPG 2.2.9, released on July 12th, 2018. These instructions are built for a headless Centos 7 LTS server (specificaly the openshift/base-centos7 docker image).

You use the below install script to install GnuPG 2.2.x by running the following commands:

# if you are root in a docker image:
curl -OL "https://gist.githubusercontent.com/simbo1905/ba3e8af9a45435db6093aea35c6150e8/raw/83561e214e36f6556fd6b1ec0a384cf28cb2debf/install-gnupg22.sh" && bash ./install-gnupg22.sh
# else if you need to sudo to do the installs:

GPG - SSH setup

Generating the master key

Here we create the master key. We want only Certify capability: we use the master key only to create the subkeys, Sign - Encrypt - Authenticate capabilities will be assigned to the subkeys.

Run the following command to start the master key generation process. Select the set your own capabilities creation process (type 8)

  ▶ gpg --full-generate-key --expert

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

	// ==UserScript==
	// @name #相亲相爱一嘉人#
	// @description 在哔站右下角添加嘉然小姐的live2d模型
	// @version 1.0.1
	// @namespace https://github.com/journey-ad
	// @author journey-ad
	// @include /^https:\/\/(www\|live\|space\|t)\.bilibili\.com\/.*$/
	// @icon https://www.google.com/s2/favicons?domain=bilibili.com
	// @license GPL v2
	// @run-at document-end

+/**
+ * MySQL Multi-Line Insert
+ * =======================
+ * See: https://gist.github.com/ProjectCleverWeb/d2362b082af1d7054ebfd464f202ec1b
+ *
+ * Notes:
+ * - I used a output buffer variable since in most languages variables are
+ *   significantly faster than function calls and in this case the syntax for
+ *   using a variable was both shorter and easier to read.
+ * - Table & column names are quoted to help improve compatibility, but in most

	import bisect
	import heapq
	import inspect
	from random import randint, shuffle
	from statistics import mean
	from timeit import default_timer, repeat

	import matplotlib.pyplot as plt
	from bigO import bigO
	from win10toast import ToastNotifier

	/**
	* 使用方法：
	* 1. 用 Chrome 打开歌单的 web 页面（可以通过分享拿到链接，链接类似这样：http://music.163.com/playlist?id=xxx&userid=yyy）
	* 2. 然后右键“检查”（如果有左上角有 device 选项，需要选择 Laptop 开头的，可以在 Edit/编辑里添加，添加的时候注意 “User Agent string” 里选择 Desktop）
	* 3. 在 console 里输入下面脚本，即可输出 “歌曲名 - 歌手名” 格式的内容：

	Springsteen - Eric Church
	Chattahoochee - Alan Jackson
	Baby Now That I Found You - Alison Krauss
	Check Yes or No - George Strait