Fighting bad sleep with Redshift

There is a lot of fuss nowadays about how modern human behaviour influences our sleep pattern in a bad way. We watch TV in bed, use our smartphone or tablet before we go to sleep. Not everyone is affected in the same way - some people still sleep well, others turn …

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Selectively disabling password authentication with OpenSSH

You have a server you'd like to manage remotely, so you open up a port in the router to log in directly. However, you don't want your server exposed, so you set up your SSH daemon to only accept keys, not passwords. Yet - dilemma - for local access you still want …

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Rate limited guest WLAN on OpenWrt

I have set up a basic guest access point with limited bandwidth. There's two parts to it: setting up the AP, then setting the limits. This is a quick walkthrough, based on the OpenWrt wiki, to which I have added the instructions for a multi-device setup (ie a network configuration …

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Cherry smart card keyboard on Linux

This is just a quick post to explain how to set up a Cherry G83-6744 smart card keyboard on Debian Linux. The keyboard comes with a driver CD (for a binary PCSC driver) and printed instructions, but you can also grab them on Cherry's site if needed.


First, install …

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Make a Beaglebone Debian testing image installable

As discussed in my previous post on the Beaglebone Black, Robert Nelson provides multiple Debian images for the Beaglebone. The installer image, however, is only available for Debian Wheezy, but you can easily turn the Jessie (Testing) tarballs into an installer image as well. Here's how.

First, grab the latest …

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Moving to Pelican

In search of a simpler blogging framework, and intended to ditch PHP, I have tested multiple static site generators, settling on Pelican. Unlike Pico or Phile CMS, Pelican generates fully static content. So no dynamically rendered front page - which taxed my poor Beaglebone Black the most.

Of course, every migration …

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RTC wakeup on Linux

Most BIOSes offer the possibility to fire up your computer at a given time. This may be a handy alternative when WoL is unavailable or unreliable, but it offers little flexibility.

Linux allows you to wake up your system however you want. You can do it the hardcore way and …

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