Category: Uncategorized
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3D Printed Heated Towelrail Brackets
Our heated towel rail’s brackets broke from old ages recently. After investigating getting a new towel rail and finding out they were quite expensive, I decided to try and design and 3D print new brackets for it. The first cut of the design turned out to have too little space for the nuts. A second…
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Preserve file permissions 664 under subdirectories in linux with ACLs
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,…
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FreeCAD
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…
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typing mathematical symbols into emacs using the TeX input method
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.
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LED down light comparison website – www.ledbenchmark.com
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
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Top 3 tips for migrating a server to a virtual machine
I recently migrated a server to a virtual machine, and while it was mostly a smooth process, I did encounter a couple of problems. Ensure that any licensing services will run on the new virtual hardware. Our accounting system’s license server wouldn’t run until it was set up with new licenses. Check date and time…
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Anacron run-parts: /etc/cron.daily/amavisd-new exited with return code 1
Anacron run-parts: /etc/cron.daily/amavisd-new exited with return code 1
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Programmatic CAD, OpenSCAD alternatives
There are quite a few programatic CAD, OpenSCAD alternatives out there. I am collecting a list of them and providing links to them here. The requirements to be included in this list are: Free and libre. They are a programming language as opposed to a GUI. OpenSCAD: The most well known programmatic CAD program. Probably…
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Emacs: yank a line multiple times from the kill ring
Today I needed to copy a line multiple times in emacs. I needed 8 copies, but how to do that in emacs short of pressing C-y to yank 8 times? My initial guess was to try C-u 8 C-y but that yanks the 8th item from the kill ring. Fuco on #emacs supplied the awesome…
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Setting alternate hreflang in WordPress
UPDATE 2013-05-03: After writing this I found out my approach was incorrect. I have since removed the code as it was not useful. Dan’s team was kind enough to point me to Virgin Australia‘s site. If you inspect the source and search for hreflang, you’ll see how it should be done. /UPDATE After seeing the…