Although there are now fewer and fewer reasons to use Windows for classic application programs, the Redmond operating system is unfortunately still needed, especially for supposed "enterprise software". The installation of the operating system is quickly done thanks to virt-install or virt-manager. For screen …

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The biggest highlight of the recently released FRITZ!OS version 7.50 is the added WireGuard support. Compared to the previous IPSec standard, which can still be used, VPN connections can be set up significantly easier on different platforms. It also offers stronger cryptographic algorithms and better performance …

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Since 2018, there has been a very elegant and lean container runtime, Podman, as an alternative to Docker. Podman offers a smaller attack surface due to omitted background services and is also often pre-installed on Red Hat-like operating systems. With a few tricks, existing docker-compose configurations can still be …

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When using ESPHome or esptool.py under Pop!_OS 22.04 I recently encountered the problem that development boards (ESP8266, ESP32) could not be flashed: 1$ esphome upload hurrdurr.yml 2INFO Reading configuration hurrdurr.yml... 3esptool.py v3.3.1 4Serial port /dev/ttyUSB0 5Connecting.... 6Chip is ESP8266EX 7Features: …

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One of the most important Git best practices is to write commits as atomic as possible - that is, to submit as few changes as possible, but as many as necessary. The advantage is obvious: commits can be reverted individually using git revert. If you mix bug fixes and new features wildly in one commit, you will undo …

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While setting up my Nextcloud calendar on an iOS device the other day, I encountered the following error: 1CalDAV account verification failed The error also affected contacts via CardDav - the usual troubleshooting options failed: Password reset Using another device Use different URL and port combinations Finally, I …

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The Shelly Plug WLAN socket adapters from the Bulgarian manufacturer Allterco are very popular. They are inexpensive and - unlike other alternatives - also allow switching without cloud constraints via their own MQTT broker. However, some devices come with severely outdated firmware, for which the search for updates …

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Legacy software is often used longer than planned. Running older Java software on high-resolution displays with more than 1080p is quite hard by default. To fix this, manually setting scaling via command-line pararameters is sufficient: 1$ java -Dsun.java2d.uiScale=3.5 -jar app.jar In this case, 3.5x or 350% scaling is …

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While there are scripts for migrating SLES to SLES4SAP, there are no tools the other way around. If you deployed the wrong template by mistake you can change the product without reinstallation with some manual steps. A comparable procedure has also been documented by the vendor for installing SUSE Manager. First of …

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When automatically customizing openSUSE 15.2 guests under VMware vSphere 6.7 recently, I stumbled upon the famous "Guest Customization failed" issue (once again). After eliminating the most common error (not having Perl installed which is necessary) I had a look at the VMware Compatibility Guide. Looks like …

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