Change SVG icons to grayscale with Inkscape

If you design your icons in SVG with Inkscape and wonder how to quickly make an "inactive" icon in grayscale, here's a quick fix (at least for Linux users):

inkscape -f teacher_na.svg --verb EditSelectAll --verb org.inkscape.color.desaturate.noprefs --verb FileSave --verb FileQuit

This will edit your file in-place (so you need to take a copy first) and will require Inkscape to be launched, but all in all, this will make you save a lot of time.

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 in freedom) software. Fear not, though, as this tutorial, written at a time between Ubuntu 14.04 and 14.10 with the Gnome Shell, will help you go through it and hopefully setup a perfect environment that you will be able to re-use anytime, anywhere (with your laptop).

YouTube requirements

In order to prepare a good video tutorial, the first thing you need is: stan