Command Line

Setting up Mastodon for Development

In this post, I will show how I set up Mastodon locally for development using Docker to run the required services.

How To

Turning a PC on and off using an ESP8266

In this post I'll report about my project of controlling the power and reset buttons (and LED) of my pc by using an ESP8266.

How To

Setting up an encrypted MQTT server on Debian/Ubuntu using mosquitto.

In this tutorial I will show how to install a MQTT server (mosquitto) on Debian/Ubuntu based systems with authentication and TLS using Let's Encrypt.

How To

Building Apps for ODROID-GO using ESP-IDF

In this post I describe the progress I've made (and potential pitfalls I've encountered) developing apps for the Odroid-Go using ESP-IDF or the Arduino IDE.

How To

Automagic Minecraft Server Backups With Map Renderings Using GitLab CI and GitLab Pages

This article describes how I managed to set up a minecraft server with automated backups and map renderings all without doing a thing once it's set up.

How To

How to build a WiFi controlled Maneki-Neko using an ESP8266

I bet you already know those golden waving/beckoning cats that are available at a low price, different colors and styles and are usually powered by a single battery which powers the waving motion. In this post I will describe how to put an ESP8266 into it.

Software

How to monitor dedicated servers (IMHO)

I have been playing with monitoring applications and servers for a while now and especially like Prometheus and Grafana. In this post I'll try to show how I monitor a small group of dedicated servers.

Software

lrkFM - Awesome, archive capable file manager for Android

About a year ago, I started a new Android project. It's called lrkFM and it's original goal was to be a simple file manager for Android. I started the project together with @nsueper as part of a challenge. Since then, I put a lot of work into it.

How To

How to deploy a single JAR file to Maven (oneliner)

I sometimes stumble upon Java libraries that are not available in Maven (or Gradle which seems to use the same ecosystem). To have to most convenient way of developing (ie. contributors should not have to download dependencies for themselves) I use my own Maven repository for hosting these.

How To

Developing Greenfoot games with Maven/IntelliJ/Eclipse

I found out, how to create a Greenfoot game without having to use the Greenfoot IDE. I'm programming using IntelliJ and building using Maven. It works like a charm and it's a lot more convenient to use this over the Greenfoot IDE.

Terminal

How to change/remove the Ubuntu Server login banner

If you've ever used a freshly installed Ubuntu Server (since 14.x), you definetly noticed the login banner that shows information scraped from the web. This might be Ubuntu news, updates or some other stuff.

Skyrim

How to use the Greybeard's Robes in Skyrim SpecialEdition

In this Article, I show how to create your own mods in Skyrim from items that are already in there but inaccessible to the player. (You can also download the mod here.)

macOS

Packaging a .jar as .app file for macOS

When you write a Java application, you'll get a `.jar` file in the end. If you launch this file on a mac, you'll end up having the default java icon and you are unable to save the application in the Dock. Fortunately, there is a Maven plugin to package a .jar file into a native .app file.

macOS

Terminal Notifier

Terminal Notifier is a command-line tool to send notifications from command line on macOS.

Docker

The ultimate Docker cleanup command

If you use Docker, you might have some problems with all those images you build during development polluting your hard drive. Good thing is, if you want of that stuff gone, there is a neat oneliner that will do exactly that!

Xen

How To: Install Xen Orchestra from source

XenOrchestra is a great tool to manage your Xen servers with a single web interface. It is particularly interesting for me, because it can install missing patches automatically. Updating is one of the

Music

Need new Music to start the summer?

It's getting warmer, so it's time to ditch my mostly depressing winter playlists and turn up the bass.

macOS

How to convert AIFF to MP3 on command line

If you've ever made a really big track (big as in file size), and you have a website where you'd like to upload it, but the website has a size limit, you'll have

Docker

How to change the swap size for Docker on macOS

Long time, no post. That's what we call holidays. Anyways, here's ho to increase the size of swap available in Docker. When you try to set up an OracleDB inside a docker container,

macOS

How to get full native resolution on a MacBook Pro with Retina

If you have a MacBook Pro with Retina display and anytime opened the system information program, you might have noticed that the MacBook Pro's native resolution is 2880x1800px but you can only set

How To

How to run multiple instances of Firefox simultaneously on macOS

When you try to start two different Firefox versions at the same time (like stable and nightly) you'll get a message that you can only run one instance of it at a time.

How To

How to install OpenXenManager on macOS Sierra

This guide will walk you through the installation of the open source implementation of the Citrix XenCenter called OpenXenManager. The application is used as a graphical way to manage a Xen Hypervisor. This

Google

Google just startet a Developer EAP for their Assistant

Android developers are currently getting emails about developing for the Google Assistant. In their blog post they state that, to be a really useful Assistant, their technology needs to be able to connect