Have you ever wanted to give several users permission to work on files within a directory, but then struggled with what permissions and user:group ownership to set them to so users can always edit the files? You might think the solution is to make the parent directory owned by a common group, lets say dev,… Continue reading Preserve file permissions 664 under subdirectories in linux with ACLs
Hack A Day has a great article introducing FreeCAD. FreeCAD is a parametric 3D modeler. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters. FreeCAD is open source (LGPL license) and completely modular, allowing for very advanced extension and customization. There are several great things about… Continue reading FreeCAD
You can type mathematical symbols into emacs using the TeX input method. C-\ TeX <enter> \ohm \therefore \pi C-\ will toggle the input method on and off. Note the \ indicator in the bottom left of the status bar.
I’ve wanted a reliable source of information on LED light bulbs for a long time. Well apparently it does exist. ledbenchmark.com have brief reviews and comparisons of many blubs and it seems to be done in a nice scientific way. Image By Mcapdevila [CC-BY-SA-3.0], via Wikimedia Commons