Goodware: Russian BOT-Networks

The FSB in Russia has an increasing demand for computing power and storage. On the other hand it is getting more difficult to import computers or parts into Russia due to the sanctions. So now an innovative Russian IT work group has developed a software stack, that allows reliable storage and computing on bot nets. …

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Ukraine

To all my readers: I am way to upset about the invasion of Ukraine by Russian fascists and the atrocities they are committing there. I am at the moment not able to write useful articles about IT topics. This is something from mainstream Russian TV by a super star who gets medals of honor from …

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Test systems

Typical software development environments have several systems running the software. While usually each developer runs it on his machine, there is a continuous integration server running and versions of the software that succeed there go to an artifactory and are immediately, during the night or manually installed on a system that is called „staging“, „development“, …

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File Permissions

Everyone who uses Linux (or some Unix) knows the normal file permissions that are administered with chmod, at least to some extent. It is worth noting, what permissions of a file and the underlying directory mean. In order to read the file, one needs read rights for the file and also read and executable rights …

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Certificates

We have been using the term „certificates“ for a long time for files that are used to encrypt or sign data or to prove identity. Now „certificates“ have become something that we use in our daily life to show that we are vaccinated or tested against Covid-19. Because they are provided as QR-codes and people …

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2022 Happy New Year

¡Próspero año nuevo! — うれしい新しい年 — Shnorhavor nor tari! — Selamat tahun baru! — Честита нова година! — Gelukkig nieuwjaar! — สวัสดีปีใหม่ — Lokkich nijjier! — عام سعيد — Среќна нова година! — Un an nou fericit! — Happy New Year! — Срећна нова година! — Feliz año nuevo! — С новым годом! — Srechno …

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Christmas 2021

С Рождеством − З Рiздвом Христовим − Prettige Kerstdagen − Feliz Natal − क्रिसमस मंगलमय हो − Nollaig Shona Dhuit! − Buon Natale − Sretan božić − Natale hilare − Честита Коледа − Veselé Vánoce − Bella Festas daz Nadal − Kellemes Karácsonyi Ünnepeket − Crăciun fericit − Zalig Kerstfeest − Wesołych Świąt Bożego Narodzenia …

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Pseudo Data Structure for Strava and Komoot

Strava and Komoot can be used to plan bicycle trips and to record them. Both tools can be used for both purposes, but it seems that Strava is better for the recording and Komoot better for the planning. Btw. it works also for walking or running, for example. But I will stick with the bicycle …

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Some Thoughts about Geo-Positioning

Today every phone and tablet and a lot of other devices have capabilities to detect the current location and this can be used for many things… Even some speedometers for bicycles rely on geo-positioning only or use a rotation count of the wheel just as additional, optional source of information. In the 1990s I worked …

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Automatic editing

For changing file contents, we often use editors. But sometimes it is a good idea to do this from a script and do a change to many files at once or do the same kind of changes often. The classic approach to this is using sed, which is made exactly for this purpose. But most …

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