Technical blog for the future me and other beings.

Money and Banking

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Syntax Highlighting

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Fairy Tales

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X.509 - Wikiwand
DER vs. CRT vs. CER vs. PEM Certificates and How To Convert Them
.pem == .crt == X.509?
.key == .csr == DER?
.pfx/.p12 == PKCS#12

key: no meta data, just the prime numbers and moduluses
cert: with meta data

The Most Common OpenSSL Commands

cert generation

How to create a .pfx/.p12 certificate file using OpenSSL – SSL Information and FAQ
HOWTO: Generate a CSR for OpenSSL – (see – SSL Information and FAQ
ssl - How to create a self-signed certificate with openssl? - Stack Overflow
OpenSSL CSR Tool - Create Your CSR Faster |

# new private key and Certificate Signing Request
openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key

openssl genrsa -out privatekey.pem 2048
openssl req -new -key privatekey.pem -x509 -days 7300 -out certificate.pem

query cert

How to examine the metadata of an SSL (HTTPS/TLS) cert

# X.509
openssl x509 -text -noout -in certificate.pem

openssl req -text -noout -in certificate.csr

# PKCS#12 (.pfx or .p12)
openssl pkcs12 -info -in key.p12


# DER (.crt .cer .der) -> PEM
openssl x509 -inform der -in certificate.cer -out certificate.pem
# PEM -> DER
openssl x509 -outform der -in certificate.pem -out certificate.der
# PKCS#12 -> PEM
openssl pkcs12 -in keyStore.pfx -out keyStore.pem -nodes
# You can add -nocerts to only output the private key or add -nokeys to only output the certificates.
# PEM -> PKCS#12
openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile CACert.crt
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Simple Machines

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Rube Goldberg Machines

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Shell Tools (Network)

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Facebook Problems

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The Second Machine Age

Physical labour was replaced by machines with better strength in the First Machine Age.
In the Second Machine Age, white collar labour will be replaced by cognitive computers.

Humans Need Not Apply - YouTube

The Great Decoupling of the US Economy

Automation, however, may take valuable skills away from human species as they are not used to doing the tasks manually anymore.

Children of the Magenta (Automation Paradox, pt. 1) | 99% Invisible
Johnnycab (Automation Paradox, pt. 2) | 99% Invisible

Freakonomics » How Safe Is Your Job? A New Freakonomics Radio Podcast
Are Self-driving Cars A Good Idea? - TechStuff (podcast)


Race Against The Machine
The Second Machine Age
Car Hacker’s Handbook

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How Games Works

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SI Units

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Podcasts in iTune should have an underlying RSS (not hosted by Apple), you can extract it with Podcast URL Extractor.
Most podcasts site nowadays also provide RSS for subscription.

How to Download Podcasts Without iTunes
How to Download and Listen to Podcasts on Android and iPhone | Digital Trends


Podcast Directory: - Stream any podcast in the universe quickly and easily.
Welcome to Podcast Chart | Podcast Chart
Stitcher Radio On Demand
Podcast Gallery - The Best Audio and Video Podcasts
Player FM - Internet Radio Done Right

100 Best Radio Podcasts for 2014 | Digital Trends

Audio Books

LibriVox (genre)
7,000+ Free Audio Books & eBook Downloads - Loyal Books

Best Websites for Free Audiobooks | Digital Trends
20 Websites To Download Free Audio Books - Hongkiat


The six best podcast apps for Android | Android Central

Player FM Podcast App - Android Apps on Google Play
Stitcher Radio for Podcasts - Android Apps on Google Play

BashPodder - the best podcatcher



JavaScript Jabber (unsubscripted)
Web Security Warriors (unsubscripted)

Two Dudes Talking

Hello Internet
Cortex - Relay FM


QI : Quite Interesting (No Such Thing As A Fish)
ANSWER ME THIS! The Sony Award-winning podcast with Helen Zaltzman & Olly Mann

Social Science

Freakonomics » Radio Explores the hidden side of everything
EconTalk | Library of Economics and Liberty


The Allusionist: the podcast that speaks to the word nerd in everyone | Culture | The Guardian
The Allusionist

Talk the Talk (unsubscripted) dislike the songs inserted to the podcast


The Ancient World
15 Minute History | A podcast for educators, students, and history buffs
The Egyptian History Podcast

HowStuffWorks network

HowStuffWorks Podcasts - HowStuffWorks
TechStuff Podcast Page - HowStuffWorks
Stuff You Should Know

Publishing Podcast

automatically hosting a podcast in your Dropbox public folder
JustCast - Publish your Podcast with Dropbox in minutes

Libsyn - Podcast Hosting Services
Simplecast - Podcast Hosting Made Incredibly Easy.

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NW.js (Github), previously node-webkit, is a platform that bundles Chromium and Node.js runtime for developers to write cross-platform desktop applications with JavaScript and HTML.

It is very similar to the Electron project but the differences are explained here.

It merged Chromium’s MessagePump* with Node’s libuv event loop.

node-webkit: app runtime based on Chromium and node.js // Speaker Deck

Creating a Photo Discovery App with NW.js (part 1) | Scotch
Creating a Photo Discovery App with NW.js (part 2) | Scotch

NW.js & Electron Compared - TangibleJS

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Movies Database

I’m picking service that can organize my to watch and watched movies.
A good recommendation system is preferable. I don’t usually do ratings and comments on movies.
For sites that support a single watchlist, I can rate my watched movies with an arbitrary rating.

IMDb - Movies, TV and Celebrities - IMDb
THE database for movies, but rating is not reliable.
Can have multiple watch lists.
Have recommendations.

Rotten Tomatoes: Movies | TV Shows | Movie Trailers | Reviews
Good rating system (Tomatometer) and movie info.
Want to see and rated are disjoint sets.
Have API for similar movies but not in the web interface.
No API for list management.
Cannot remove from want to see list.
Seems the web interface is not fully developed.

Movie Reviews, Articles, Trailers, and more - Metacritic

The Movie Database (TMDb)
Good related movies.
Have Favorite, Watchlist and Rating.
Have collection to link all films in a series.
Have API for list management.
Can import from IMDb CSV.

Innovative and personalized recommendation system.

Five Best Movie Recommendation Services

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When Average is not Enough

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