Brendan DeBeasi brendandebeasi

Get a Free SSL Certificate With Let’s Encrypt

Let’s Encrypt is a free, automated, and open Certificate Authority.

Install tools for using the Let's Encrypt certificates using Certbot

  sudo apt-get update \
  sudo apt-get install software-properties-common

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:

Webdriver PHP API workthough

Open a browser

# start an instance of firefox with selenium-webdriver

$browser_type = 'firefox'
$host = 'http://localhost:4444/wd/hub'

$capabilities = array(\WebDriverCapabilityType::BROWSER_NAME => $browser_type);

	#!/usr/bin/env python3

	import argparse
	import base64
	import hashlib
	import json
	import os
	import secrets
	import sys
	import time

	<?php

	declare(strict_types=1);

	namespace App\Models;

	use Illuminate\Database\Eloquent\Model;

	class Todo extends Model
	{

	#!/bin/bash

	# ssh-cipher-benchmark.sh - Assesses speed of SSH encryption between specific hosts.
	# Usage:
	# ssh-cipher-benchmark.sh <remotehost> [ciphers]
	# Default ciphers: all we can find...
	#
	# Note: In some cases, the first cipher tested runs faster than the others, regardless of order.
	# Cause of this is not known, but changing the order of testing shows it to be true. Run the
	# first one twice if you suspect this. Perhaps it is due to buffering?

	jenkins.model.Jenkins.getInstance().getUpdateCenter().getSites().each { site ->
	site.updateDirectlyNow(hudson.model.DownloadService.signatureCheck)
	}

	hudson.model.DownloadService.Downloadable.all().each { downloadable ->
	downloadable.updateNow();
	}

	def plugins = jenkins.model.Jenkins.instance.pluginManager.activePlugins.findAll {
	it -> it.hasUpdate()

	#! /bin/bash

	sudo apt-get update
	sudo apt-get install -y software-properties-common debconf-utils
	sudo add-apt-repository -y ppa:webupd8team/java
	sudo apt-get update
	sudo echo "oracle-java8-installer shared/accepted-oracle-license-v1-1 select true" \| sudo debconf-set-selections
	sudo apt-get install -y oracle-java8-installer

	/**
	* loadJSONP( url, hollaback [, context] ) -> Null
	* - url (String): URL to data resource.
	* - hollaback (Function): Function to call when data is successfully loaded,
	* it receives one argument: the data.
	* - context (Object): Context to invoke the hollaback function in.
	*
	* Load external data through a JSONP interface.
	*
	* ### Examples