Haven’t you always wanted Calvin & Hobbes stargazing at the daily NASA Astronomy Picture of the Day for your wallpaper? I know I have. Now we can. In this tutorial I will show you how to set that up.
First, just double check you have these installed. I think most users will already.
sudo apt-get install imagemagick wget
Cool. Now, run this. It just tells you your screen resolution. If you already know it, great! Skip to the next step.
xdpyinfo | grep ‘dimensions’
You can run this every day to get the latest image, or schedule it with Cron.
Based on some great work from Reddit.