david l euler davideuler

IPsec/L2TP VPN Auto Install Script for Ubuntu/Debian

Amazon EC2 user-data file for automatic configuration of IPsec/L2TP VPN server on a Ubuntu or Debian instance. Tested with Ubuntu 14.04 & 12.04 and Debian 8 (Jessie).

With minor modifications, this script can also be used on dedicated servers or any KVM- or XEN- based Virtual Private Server (VPS) from other providers.

My VPN tutorial with detailed usage instructions

Alternative VPN script for CentOS/RHEL
Original post by Thomas Sarlandie

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

Convert XPS to PDF on Linux and Mac

Download this file
chmod +x ./xps2pdf.bash
To convert a particular xps file: ./xps2pdf.bash thefile.xps
To convert all xps files in the current working directory: ./xps2pdf.bash *.xps

Stevey's Google Platforms Rant

I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.

I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real

>>> docker exec -it CONTAINERID /bin/sh
/app # telnet
/bin/sh: telnet: not found

/app # apk update
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz
v3.7.0-243-gf26e75a186 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main]
v3.7.0-229-g087f28e29d [http://dl-cdn.alpinelinux.org/alpine/v3.7/community]

How to install CUDA & cuDNN on Ubuntu 22.04

Install NVIDIA drivers

Update & upgrade

sudo apt update && sudo apt upgrade

	#!/usr/bin/python
	# -- encoding: UTF-8 --

	import codecs
	import sys
	from math import log
	from collections import defaultdict

	class Trie (object):
	class TrieNode:

	/jshint esnext:true/
	// see https://gitlab.com/help/web_hooks/web_hooks for full json posted by GitLab
	const NOTIF_COLOR = '#6498CC';
	const refParser = (ref) => ref.replace(/^.*?([^\/]+)$/,'$1');

	class Script {
	process_incoming_request({request}) {
	try {
	switch(request.headers['x-gitlab-event']){
	case 'Push Hook':

	#!/usr/bin/env python
	#
	# Shows GOP structure of video file. Useful for checking suitability for HLS and DASH packaging.
	# Example:
	#
	# $ iframe-probe.py myvideo.mp4
	# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED
	# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED
	# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED
	# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED

	#!/usr/bin/env bash

	# install docker
	# https://docs.docker.com/engine/installation/linux/ubuntulinux/

	# install docker-compose
	# https://docs.docker.com/compose/install/

	# install letsencrypt
	# https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-16-04