Welcome to the OpenGL Programming book. OpenGL is an API used for drawing 3D graphics. OpenGL is not a programming language; an OpenGL application is typically written in C or C++. What OpenGL does allow you to do is draw attractive, realistic 3D graphics with minimal effort. The API is typically used to interact with a GPU, to achieve hardware-accelerated rendering.

Gitchain is an application of the exciting ideas behind Bitcoin, Namecoin and DHT applied to Git hosting. Once you install it, it acts as a local proxy to the entire Gitchain P2P network.

php -S 127.0.0.1:8080

Mettre son projet en production, c’est la galère. Tellement que mille méthodes on vu le jour pour automatiser tout ça. Chef, salt, fabric, des script bash, virtualenv, git hooks, etc.

Après, il y a ceux qui utilisent des VM. Qui ont leur propres outils d’automatisation type Vagrant.

Et comme ça suffit pas, des services ce sont mis en place pour faciliter la mise en prod dans le cloud comme heroku, gondor…

Malgré ça, Max fait encore beaucoup de truc à la main parce que “ça marche jamais comme prévu”. Pas très scalable.

Dernièrement, grâce à notre cher Cortex, j’ai découvert un projet écrit en Go nommé Docker, qui propose encore une autre approche du problème.

How to use lib lua

for i in pidof python; do cat /proc/$i/cmdline | tr "\0" " " | sed "s/$/ $i\n/"; done

Useful when you have permission problem on which permission policykit handles. (network disk mounting power management ...)

If your problem seems related to debconf database corruption, be it of
above kind or not, the suggested fix is, quoting Joey Hess message in
#198297 bug page

By purging and reinstalling the package, you only fixed the entries for
that package. I suggest you run /usr/share/debconf/fix_db.pl as root,
which will delete all the orphaned questions. You may end up having to
repeat your answers to some debconf questions during future upgrades,
but that's a small price to pay for a consistent debconf database.

After running /usr/share/debconf/fix_db.pl as root, please look which
templates were affected,

$ diff -u /var/cache/debconf/config.dat{-old,} | grep ^[+-]Name
$ diff -u /var/cache/debconf/templates.dat{-old,} | grep ^[+-]Name

Your debconf database should be now in a consistent state and packages
configuration should succeed.

Most linux distributions use some type of mechanism to gracefully stop daemons and unmount storage volumes during a reboot or shutdown. It’s most commonly done via scripts that will wait for each daemon to shut down gracefully before proceeding to the next daemon.

As we know, sometimes servers misbehave due to things put them through, and you can quickly end up in a situation where things are going badly

Leszek Godlewski, the former developer at The Farm 51 who has ported games like Painkiller Hell and Damnation and Deadfall Adventures to Linux / SteamOS, has given another presentation on porting games to Linux.

Travelling can be enriching and inspiring, especially if you’re in a place you haven’t been before. Whether on vacation or travelling for business, one of the first things that people usually do, including myself, after arriving in their hotel room, is turn on the lights (even if daylight is still coming through the windows), jump on the bed to feel how comfortable it is, walk to the window, and admire the view. If you like what you see, sometimes you grab your camera and take a picture, regardless of reflections in the window.

Without considering geolocation metadata [1] (if enabled), reflections could be a way to get more accurate information about where a picture was taken. How could one of glass’ optical properties [2], reflection, disclose your location? Continue reading.