It started two years ago when nearly everybody in my near surrounding working as an IT expert was burning for Docker, containers, virtualization, clustering and all that fancy stuff with Netflix-, Amazon or Google-cloud foundation. It was back in 2015 when I had first contact with IBM Bluemix Garage and the new craze Ionic and/ or AngularJS. Until then I was a heavy weight champion of JEE development with an application server running 50-100 servlets at once. Now I sat with two guys in my office and tried to port the important parts of a few servlets to the new platform – check if it works out and estimate transition cost. More…

Companies sometimes need shared credentials. You need to access a customer's testing system, log in to a sample cloud instance or exchange work in progress from developer accounts. These systems are password protected and normally you have a shared document, a Wiki or a mailing list. It has never been a good idea to share passwords this way. Once you saved the credentials access is unlimited. More…

That's a pure hypothesis and includes Scientism (Asimov). Linux is not a clearly bounded object. First step of every scientific inquisition of Linux users is to ask, which distribution they use or more formal: who is your god? One could dive even deeper and is absolutely right when saying a distribution is not Linux but uses Linux. Some are real priests of open source software and were put together from patches of kernel code. More…

Illustrates the steps to create a clock face with Gimp. Not yet translated. More…

I started coding software in 1993. It was QBasic on a KC85/3, top computer platform of GDR and available at my school. Until then I moved through various level of expertise and have always been involved with high scalability projects of BKA (German Federal Investigation Bureau), Deutsche Bahn/ Schenker (Railway/ Transportation) and energy markets as well as automotive backends. Non-IT People always ask me, why I don't make it much simpler and they even suggest a solution. This two-part-series explains, what separates experts from average people. More…

A statement while there is an argument about treating gender like sex in German language. The majority of non-German speakers does not care about the private parts of a group or profession. English language distinguishes between actor and actress. But an officer is an officer. But it is not yet translated. More…

Sovereign Citizen/ Freeman/ Reichsbürger know for sure that laws don't apply anymore. They are invalid for a special reason they found out and need to tell you. While I was cycling along a street one of these guys took my right of way. We met again at the next traffic light and he started a discussion German traffic law Straßenverkehrsordnung (StVO, lit. street traffic law) is not valid anymore. I looked up his arguments afterwards and found out he mixed up StVO and StVZO. The latter was a regulation how cars in general are to be applied to public streets in general. This includes technical guidelines as well as license plates or insurance. Not yet translated. More…

I decided to charge some of my Li-Ion-batteries with a solar panel. With 50Wh maximum capacity and a super idealistic charging time of 2h a panel of 20W is the absolute minimum. During winter only 10% of this power is left, thus 2W of charging power in average (less hours of sunshine and lower angle). It'll need >2 days to charge the battery. But for a first test run it is sufficient. The specs summed up: More…

Sometimes there a small problems asking for a large scale solution. There is a variety of night lights: with motion sensor, with a bear print, with a timer switch and controllable by smartphone. As a network and media engineer I long for my personal one. Not yet translated. More…

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