Voice control Archlinux with Amazon Alexa
I was interested to see how commercial voice recognition software would behave on an usual Linux laptop and tried to deploy an Amazon Alexa instance. There are some installation scripts and tutorials available for Ubuntu and Raspberry PI using the avs-device-sdk from Github. Even though some of them are official …
Auto update Archlinux and user repository
In this post I’m going to describe on how to setup automatic package upgrades / system updates. In the first part, a systemd service script and timer triggers the package manager pacman to automatically sync the repositories and upgrade the packages every hour: The last command enables (on boot) and …
Virtual 3D online exhibition with MapBox GL JS
For my last semester in university (summer semester 2018) at the KIT, I was part of a project to create an “online art exhibition”. We planned to produce different media formats in smaller groups. One for video, another for text and promotion and one for the online presence. I’ve figured …
Host your own Mapbox GL JS vector tiles map
I’ve done some research recently on how I could host my own online map viewer with a MapBox GL JS instance, an excellent and modern open-source alternative for Google Maps. The server should also serve own preprocessed map data from OpenStreetmap planet extracts. No external or third-party service will be …
Easily setup Signal 2FA on Nextcloud 14
Two-factor authentication (short 2FA) is an important security concept to secure unauthorized access to your web applications. Popular online services like Google Mail, Instagram or Facebook already provide this mechanism to secure user accounts with an additional one-time token. Considering someone is able to obtain your username and password combination, …
Cloud synchronization performance tests of various Linux clients
I already tried using Nextcloud as a backup solution which will sync my complete home directory into a Nextcloud instance. This is very practical if you want to have access to your files when you don’t have your laptop with you or when it gets lost. Of course there are …
Backing up encrypted and compressed VM snapshot to Azure Cloud
For some time now I was thinking about a good backup solution for our root server. We are using our hard drives in RAID0 mode which means that the two hard drives are not mirrored. Therefore we could use the complete 5TB space. In this scenario, complete data loss is …
Auto-update Android apps with F-Droid & Yalp Store
I consider auto updates of userland software as an important and also convenient security feature, easpecially on mobile platforms. As far as I know this is already the default behaviour for Android systems with Google Play Store preinstalled. Some time ago I switched from Play Store to the open-source F-Droid …