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How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

Better SSH Authorized Keys Management

A seemingly common problem that people encounter is how to handle all of your users authorized_keys file.

People struggle over management, ensuring that users only have specific keys in the authorized_keys file or even a method for expiring keys. A centralized key management system could help provide all of this functionality with a little scripting.

One piece of functionality overlooked in OpenSSH is the AuthorizedKeysCommand configuration keyword. This configuration allows you to specify a command that will run during login to retrieve a users public key file from a remote source and perform validation just as if the authorized_keys file was local.

Here is an example directory structure for a set of users with SSH public keys that can be shared out via a web server:

Guide to how fucked is SSL?

Thanks to Jacob Kaplan-Moss, Donald Stufft, David Reid, Allen Short, Zain Memon, and Chris Armstrong for review.

This is a guide for technical individuals to understand in what circumstances SSL communications are secure against an observer-in-the-middle (for all intents and purposes: the NSA).

Note: This is old, sysvinit sucks. There used to be an updated version of this in the cjdns git, but it's gone now. Use systemd or upstart

Installation:

Place hyperboria.sh in /etc/init.d/hyperboria
chmod +x /etc/init.d/hyperboria
update-rc.d hyperboria defaults

This will cause it to automatically start with your computer. You can control it with /etc/init.d/hyperboria . Some systems (Ubuntu, not sure about others) allow you to use the service command, which shortens the command to `service hyperboria

	# AutoscaleRichTextLabel.gd
	#
	# ABOUT
	# 2023.08.04 by Brom Bresenham
	# Tested on Godot 4.2-dev2
	#
	# USAGE
	# 1. [Inspector] Create a RichTextLabel node and attach this script to it.
	# 2. [Editor] Save and reload the scene to activate this as a @tool script
	# that will automatically set the Node Reference Height.

	<?xml version="1.1" encoding="UTF-8"?>
	<!DOCTYPE keyboard SYSTEM "file://localhost/System/Library/DTDs/KeyboardLayout.dtd">
	<!--

	Data generated Wed Mar 23 01:35:41 2022

	Generated by kluchrtoxml_64 build 203

	-->
	<!--Last edited by Ukelele version 351 on 2022-03-23 at 01:45 (GMT+8)-->

	sudo apt-get update
	sudo apt-get install python-dev git python-pip automake libtool libssl-dev
	git clone https://github.com/numenta/nupic.git
	mkdir -p nta/eng
	echo "
	export NTA=$HOME/nta/eng
	export NUPIC=$HOME/nupic
	export BUILDDIR=/tmp/ntabuild
	export MK_JOBS=3
	source $HOME/nupic/env.sh" >> ~/.bashrc

	13:15 <xQuasar> \| HASKELL IS FOR FUCKIN FAGGOTS. YOU'RE ALL A BUNCH OF
	\| FUCKIN PUSSIES
	13:15 <xQuasar> \| JAVASCRIPT FOR LIFE FAGS
	13:16 <luite> \| hello
	13:16 <ChongLi> \| somebody has a mental illness!
	13:16 <merijn> \| Wow...I suddenly see the error of my ways and feel
	\| compelled to write Node.js!
	13:16 <genisage> \| hi
	13:16 <luite> \| you might be pleased to learn that you can compile
	\| haskell to javascript now

	# download latest libevent2 and tmux sources, and extract them somewhere
	# (thx bluejedi for tip on latest tmux URL)
	#
	# at the time of writing:
	# https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
	# http://sourceforge.net/projects/tmux/files/latest/download?source=files
	#

	# install deps
	yum install gcc kernel-devel make ncurses-devel

	#!/bin/sh -e
	### BEGIN INIT INFO
	# hyperboria.sh - An init script (/etc/init.d/) for cjdns
	# Provides: cjdroute
	# Required-Start: $remote_fs $network
	# Required-Stop: $remote_fs $network
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6
	# Short-Description: Cjdns router
	# Description: A routing engine designed for security, scalability, speed and ease of use.