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This is the home-page of Karl Voit.

On this page you can see the latest blog updates. For further articles, please use the search bar or navigate through the blue tags. My recommendations are pim, privacy, or security.

I recommend any decent RSS/Atom aggregator to get notified on blog updates.

Most recent articles or updates:

2019-10-18: Lazyblorg Allows to Override Language Auto-Tags

If you are using lazyblorg to generate your blog, you may now override the auto-detected language for each article.

So far, the software supports German and English. The resulting auto-tags are language:deutsch and language:english respectively. In case the algorithm is not sure about the language, it results in language:unsure.

In any case, you may now override the language auto-tag by assigning a normal user tag like :deutsch: or :english:. On my blog here, you may find examples of overridden language tags on this, this or this article.

Everything related to tags and auto-tags is now documented in the new Wiki page for tags.

2019-10-18: Per MediathekView Beiträge von der ORF TVthek herunterladen

Der ORF bietet ein gutes Programm. Gerade für Österreicher ist er wohl das Maß aller Dinge im Bereich des täglichen Bewegtbildes. An Qualität und Inhalten ist er den privaten Konkurrenten meiner Meinung nach haushoch überlegen - besonders im Nachrichtenbereich. Ich oute mich als großer Fan der ZIB2, die ich keinen Tag versäume.

Dieser Beitrag beschreibt, wie ich Sendungen vom ORF herunterlade, um sie am Handy anzusehen - oder meistens sogar nur nebenbei anzuhören.

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2019-10-16: Lazyblorg Now Links Larger Images

Today, I finished working on a lazyblorg feature I was thinking of for a long time: embedding images that link to a differently sized image. This way, you are able to include a smaller image within the blog article itself and allow your readers to take a closer look at a larger version of the same image.

This comes with some changes you might want to understand before upgrading lazyblorg and using that feature.

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2019-10-15: Grazer Pub: Konkurs wegen Rauchverbots. Seriously?

Heute gab es auf ORF Steiermark einen Artikel, wonach das Irish Pub "Molly Malone" den Betrieb einstellt. Als Insolvenzgrund wird das bevorstehende gesetzliche Rauchverbot angegeben.

Das halte ich für eine Ausrede.

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2019-10-12: UOMF: Presentation Slides Via Reveal and PDF Handout

This is an article from a series of blog postings. Please do read my "Using Org Mode Features" (UOMF) series page for explanations on articles of this series.

In this article, I will explain a neat method of conducting HTML screen presentations as well as generating the presentation handouts in PDF.

Read the whole article ...

2019-10-09: Memacs: Major Update of the Filenametimestamp Module

In the recent days, I was investing quite some work in a rewrite of the filenametimestamp module of Memacs for referencing files within Org mode independent of their storage path.

If you are already using this module, you should think of upgrading now because I fixed quite some bugs. Further more, it provides new functionality which could only be found in the corresponding stand-alone PoC module.

I won't go into details here, since I also updated the module documentation. For developers, I also created a decent set of unit tests.

The most current version of Memacs is available via pip install memacs but it may need some help from experienced users of pip.

2019-10-05: Microsoft as Hardware Innovation Leader and: HW Is More Innovative Than SW

Frequent readers of my blog know that I'm not quite a fan of software products by Microsoft. However, I was a fan of hardware done by Microsoft since decades. I was using the very same Microsoft mouse for probably twenty years. Yesterday, I was able to briefly test an Microsoft Arc Touch Mouse. Impressive device with brilliant design solutions, particularly for mobile workers. I own a used Microsoft Surface Pro 3 running Windows 10 which is a great concept and a remarkable piece of technology. Only to mention a few examples.

Now, Microsoft announced Surface Duo and Surface Neo - very unusual - over a year in advance.

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2019-10-02: Ein Blick in das Jahr 2000 - Sowjetische Programme, Projekte, Prognosen

Beim Ausräumen einer alten Garage viel mir dieses nette Stück Geschichte in die Hände: Ein Blick in das Jahr 2000 - Sowjetische Programme, Projekte, Prognosen

Es handelt sich um ein kleines Heftchen aus dem Jahr 1984 vom russischen Verlag RIA Novosti, der für russische Propaganda im Westen zuständig war und nach wie vor ist.

Die Titelseite des Heftchens.

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2019-10-01: Snowden on Personal Security and Privacy

Starting with the following tweet, Edward Snowden published a thread with recommendations of device/application choices and configuration measurements for maximizing security and privacy .

In recent interviews, I've gotten questions over if or how I use a smartphone. They're so dangerous for someone like me, so it's quite difficult to give an in-depth answer. But I published a paper with @bunniestudios a few years ago discussing some risks:

— Edward Snowden (@Snowden) September 21, 2019

This blog entry is an excerpt of this thread of tweets, not only but also to my personal reference.

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2019-09-25: UOMF: Using Org Mode Categories Versus Tags

This is an article from a series of blog postings. Please do read my "Using Org Mode Features" (UOMF) series page for explanations on articles of this series.

Emacs Org mode does provide two basic features to assign shared topics to entities: Categories and tags. Users might get confused when to use categories and when to use tags for labeling things. This article explains the fundamental differences and gives my recommendations on when to use what. Although I don't want to duplicate too much content from the Org mode manual, there are few things I repeat.

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2019-09-25: Blog Series: Using Org Mode Features (UOMF)

Since I've written many articles on how I am using elements and features from Org mode, I decided to introduce a new blog series for these articles. I also added already published articles to this series in case their topic fits this category.

It is crucial to know that these articles are my personal approach to deal with various situations within Org mode. It is driven by my own requirements and use-cases. It is not an exhaustive reference on how to use things from the great Org mode manual. Some articles do not even provide solutions. Sometimes, articles just mention things where I'm struggling with or shed a light on things to be aware of when using Org mode for a long period of time.

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2019-09-25: On Not Using Tags for Categorizing Blog Articles of a Series

I started to write articles that I embraced in "Blog Series" such as, for example, the one on bad design decisions.

A probably obvious choice would have been to introduce tags for each series which could be used to link and find articles of these series. I decided not to. On purpose. And this is why.

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2019-09-17: I'm Probably Not Going to Buy OnePlus Smartphones Any More

Since almost exactly two years, I'm using a OnePlus 5 Android smartphone.

This is a small add-on to my previous blog posts on this device which explains why I refrain from buying another device from OnePlus.

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2019-09-14: The Best Restaurants In and Around Graz


From time to time, I do love to eat in more or less fancy restaurants.

If I'm in the right mood, I blog about my experience.

Here is my list of my personal restaurant recommendations for Graz mostly in no particular order:

Please note that I did not get any money or other benefit for this list.

2019-09-11: 2FA Using oathtool in the Command Line

Update 2019-09-11: added link to

So far, I was using two-factor authorization (2FA) with TOTP and FreeOTP on my Android phone only. (I don't want to use the more popular Google Authenticator because of Google and personal preference.) TOTP provides a higher level of security in contrast to any text message-based (SMS) or network-based two-factor authorization.

A couple of days ago, I stumbled over a great blog post where the author explains how to set-up TOTP using oathtool in the GNU/Linux command line. This has the advantages that I am able to use TOTP authentication on my Linux machines without my mobile phone and it forces me to backup my TOTP secrets and not only some recovery keys.

However, the proposed method uses key-value-pairs of the services and their secrets within a clear-text file. This was a clear no-go from my point of view. It would expose my secrets to any intruder on a silver plate.

Therefore, I extended the shell script with a GnuPG encrypted file for the secrets.

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2019-09-08: Today, I Am Tweeting for Ten Years

Ten years ago, I started using Twitter for micro-blogging. It was an experiment, mainly to find out why people are using this media and see how my opinion changes when using it. At first, I was quite sceptic.

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2019-09-01: Padmate PaMu Slide: Short Review

This is about switching from cable-based headphones to Bluetooth-based ones and what I do think of Padmate's PaMu and PaMu Slide.

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2019-08-29: The Cost of Switching Software Tools

Jack Baty (yes, the guy from this article) wrote an interesting blog post on the reasons why he is switching his tools:

I do like to try new things, and if I’m being honest, there are only 3 reasons I switch tools:
1. Boredom 2. Procrastination 3. Curiosity
Everything else is rationalization.

Interesting. My situation and opinion is different.

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2019-08-25: Japan - First Impressions from an European Point of View

My wife and I have been traveling through Japan for two weeks: Tokyo, Fukuoka, Osaka. This is not a report on our trip. This posting is a mixed, incomplete and subjective collection of stuff that we found cool, exaggerated, quaint or just different from our situation in Austria (Europe).

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2019-08-25: Buch-Kritik: »Der Richter und sein Henker« von Friedrich Dürrenmatt

In einem Podcast zu Kriminalfällen gab es eine Referenz auf den Kriminal-Roman »Der Richter und sein Henker« von Friedrich Dürrenmatt. Ich fand das eBook zum Ausborgen auf OpenLibrary und las es.

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2019-08-25: Buch-Kritik: »QualityLand« von Marc-Uwe Kling

Schon 2018 stolperte ich nach deutlichen Empfehlungen über das Video von 34C3 von Marc-Uwe Kling, wo er eine Lesung mit Textausschnitten aus seinem Buch "QualityLand" hält. Ich habe nach dem appetitanregendem Video nicht gleich das Buch besorgt und es wieder aus den Augen verloren. Vor kurzem habe ich es von Freunden empfohlen bekommen und gelesen.

Gleich mal vorweg mein Fazit: absolute Pflichtlektüre für alle!

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2019-08-24: Die Zeit - Verbrechen: Podcast über echte Kriminalfälle

Zeit Online hat eine Podcast-Serie namens Verbrechen. Dabei sprechen Sabine Rückert und Andreas Sentker über reale Kriminalfälle aus der Vergangenheit. Die Folgen sind jeweils ungefähr eine Stunde lang.

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2019-08-12: Contributing to Openstreetmap and Mapillary

I was travelling some cool locations in Asia. When I was using OsmAnd to navigate, track and looking for restaurants and shops, I noticed that in my area, most restaurants and shops were not mapped yet. Further more, I saw that there was no Mapillary-based photos available. Mapillary is a cool alternative to Google's Street View, if you don't know it yet.

This was where I decided that I could improve the situation a bit. And it was that easy that anybody can do it as well.

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2019-07-09: Managing Digital Files (e.g., Photographs) in Files and Folders


I am a passionate photographer when being on vacation or whenever I see something beautiful. This way, I collected many JPEG files over the past years. Here, I describe how I manage my digital photographs while avoiding any vendor lock-in which binds me to a temporary solution and leads to loss of data. Instead, I prefer solutions where I am able to invest my time and effort for a long-term relationship.

This (very long) entry is not about image files only: I am going to explain further things like my folder hierarchy, file name convention, and so forth. Therefore, this information applies to all kind of files I process.

Before I start explaining my method, we should come to an agreement whether or not we do have the same set of requirements I am trying to match with my method. If you are into raw image formats, storing your photographs somewhere in the cloud or anything else very special to you (and not to me), you might not get satisfied with the things described here. Decide yourself.

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2019-07-09: Poor Man's Monitoring of a Remote Linux Host via Syncthing


I'm helping some old lady by administrating her notebook. I set it up with Xubuntu LTS GNU/Linux which comes with the very easy to use and fast Xfce environment: not bloated and offers everything necessary. I stripped down the "start menu" such that it only shows the ten apps she's using.

Remote access is done via TeamViewer if necessary.

Today, I set it up with a neat monitoring I'm going to explain in this post.

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