Dario Castañé darccio

Operational PGP

This is a guide on how to email securely.

There are many guides on how to install and use PGP to encrypt email. This is not one of them. This is a guide on secure communication using email with PGP encryption. If you are not familiar with PGP, please read another guide first. If you are comfortable using PGP to encrypt and decrypt emails, this guide will raise your security to the next level.

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

A pseudonymous trust system for a decentralized anonymous marketplace

Dionysis Zindros, National Technical University of Athens dionyziz@gmail.com

Keywords

pseudonymous anonymous web-of-trust identity trust bitcoin namecoin proof-of-burn timelock decentralized anonymous marketplace openbazaar

Abstract

Web Components as successor to jQuery

This article is a homage to jQuery - a library that once was a great boost for the productiveness of thousands of web developers around the world. In the upcoming times, the benefit of using it will drop as web developers start to switch to the web standards, including Web Components.

Status quo

As of early 2014, current state of interactive web development heavily relies on established web standards - HTML, CSS and JavaScript, all of which have been subject to consistent iterative improvement during the last few years, with the support of all major web browser vendors.

As a report shows, 57.8% of all websites use JavaScript, of which stunning 93.2% use the jQuery library to enhance the development (source). There is a long tail of other libraries and micro frameworks that are being used instead, or in compliment to jQuery, but none of them has gotten close to the popularity of t

Default

Powerlevel10k

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	#!/usr/bin/env python
	"""
	http://www.openldap.org/faq/data/cache/347.html

	As seen working on Ubuntu 12.04 with OpenLDAP 2.4.28-1.1ubuntu4

	Author: Roberto Aguilar <roberto@baremetal.io>
	"""
	import hashlib
	import os

	// Just before switching jobs:
	// Add one of these.
	// Preferably into the same commit where you do a large merge.
	//
	// This started as a tweet with a joke of "C++ pro-tip: #define private public",
	// and then it quickly escalated into more and more evil suggestions.
	// I've tried to capture interesting suggestions here.
	//
	// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
	// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

	import javax.net.ssl.SSLParameters;
	import javax.net.ssl.SSLSocket;
	import javax.net.ssl.SSLSocketFactory;
	import java.io.*;

	/** Establish a SSL connection to a host and port, writes a byte and
	* prints the response. See
	* http://confluence.atlassian.com/display/JIRA/Connecting+to+SSL+services
	*/
	public class SSLPoke {

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048