The complete guide to screencasting in Ubuntu 14.04 + Gnome Shell

For those developers of you wanting to do more than just develop under Linux, you’ll have realized that there are many things stopping you for doing proper video tutorials as easily as you would do it with some non-free (as…

More Details
Using php5-memcached to store sessions on distributed servers

This article is an extension of the previous article about storing sessions in Memcached with PHP. Using Memcached for sessions storage is generally a matter of speed (storing them in memory is faster than on disk) and of scalability (using…

More Details
Using Chamilo juju charm to setup a dev environment on Digital Ocean

If you’re in a hurry/on speed, know this: this procedure is slightly more difficult (so longer) than installing the charm on Amazon you can skip directly to “Installing Juju” if you already have juju installed, you can skip to the…

More Details
Great VIM regexp tutorial

Just a (great) reference: http://vimregex.com/ Read it = love it!

More Details
Munin 2.0 on Debian

Munin 2.0 has been released and packaged for Debian, and even backported to Squeeze (from backports.debian.org). Even though there are still some quirks in this version (or just the Debian packaging), it is far better (more scalable, more powerful and…

More Details
Server stalled on Loading Kernel Modules without chroot – What to do?

Today we had a server stalled on “Loading kernel modules” at reboot (after adding 12GB of RAM, to 24GB total). The datacenter didn’t know what to do and they put us on a 32-bit rescue mode console from which we…

More Details
HOWTO Build your own binaries of PHP Xapian bindings for Debian

Due to a licensing issue, the PHP bindings for Xapian were removed from Debian Squeeze. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513796 for more information about this. Though, it is not really hard to build your own package from source. Here is how: sudo apt-get…

More Details
Adobe Flash and V4L2 webcams

Many new videoconference systems nowadays are Flash-based. Of course, the main input for them is some sort of video device (e.g. a webcam). Under Linux, the framework responsible for this is Video4Linux (V4L), of which version 2 (aka V4L2) is…

More Details
Installing BigBlueButton 0.64 on CentOS5.5

The documentation to install BigBlueButton 0.64 on CentOS (and on most other distributions) is really excellent. However, I found that CentOS 5.5 had not been documented yet, so I tried it and run into a few problems. I explain below…

More Details
Mantis, genome comparison software

BeezNest is the proud provider of the hardware and systems architecture running the main server for Mantis, the missing link between multi-species full genome comparisons and functional analysis. In February 2008, Raphaël Helaers, main developer of Mantis, working at the…

More Details