It’s been a while since I last posted something. I will fill the gap with a quick post about rekognition.

rekognition is a service from AWS that is described as:

Deep learning-based image recognition

Search, verify, and organize millions of images

In this light post, I will present a simple method to grab a picture from my webcam, send it to rekognition and display the result.

The part of the result I will focus on is the emotion. In other word, I will ask amazon: “An I happy?”.

Introduction

Single page application (SPA) are a standard when dealing with mobile apps. Unfortunately, by now, JavaScript is the only programming language supported by a browser.

Therefore, to code web UI it remains a must.

Life of an ex sysadmin who wants to code a web app: getting depressed

To make the development easier, your friend, who is “web developer” will recommend you to use a marvelous framework. Depending on the orientation of the wind, the moon or its reading, he will encourage you to use reactjs, angular, ember or whatever exotic tool.

Introduction

Transferring files between server is no big deal with nowadays network equipments. You use rsync, scp or even http to get a file from A to B.

Of course, you rely on the TCP stack so you have a decent reliability in the transport.

But TCP has its drawback, especially when it needs to go through a lot of equipments. Typically in the cloud, or over a VPN.

To prevent the drawbacks of the TCP protocol, there are several solutions:

Introduction

System engineers are used to CSV files. They may be considered as a good bridge between Excel and the CLI. They are also a common way to format the output of a script so data can be exploited easily from command lines tools such as sort , awk,uniq, grep, and so on.

The point is that when there is a significant amount of data, parsing it with shell may be painful and extremely slow.

Introduction

I usually don’t like slidewares.

Actually as IT engineer working, by now, exclusively in France, I’m facing the PowerPoint problem:

• Too many boring slides,
• too much information per slide,
• a presenter dedicated to read their content.

Therefore, the audience is watching its watch while waiting for a coffee break.

I won’t redo the introduction I already did in a previous post but indeed slides can, from time to time, be a value-add to a presentation.

Introduction

A bunch of friends/colleagues offered me a raspberry pi 3. It may become my VPN gateway, or my firewall, or the brain of my CCTV, or maybe the center of an alarm…. Maybe a spotify player…

Anyway, I have installed raspbian and I’m now playing with it.

Yesterday evening, as I was about to go to bed, I’ve had a very bad idea… I’ve linked together my rpi and my Oregon Weather Station. 3 hours later, I was still geeking…

the goal

As all my peers, I have the opportunity to talk about different technological aspects. As all my peers, I’m asked to present a bunch of slides (powerpoint or keynote, or whatever).

In this post I won’t dig into what’s good or not to put in a presentation, and if that’s what interest you, I recommend you to take a look at Garr Reynold’s tips and tricks.

Steve Jobs said: