January 13, 2021

The Failproof Way of Making Neapolitan-Style Pizza at Home

I am maniacal about pizza. So usually Friday night is pizza night. And as I am a sadistic person I like to post pictures of my pizzas on Twitter to make people hungry and angry (hangry)? As a small apology for all the drooling out there, here's my proven and failproof cheater method of making pizza. I have optimized my method towards a Neapolitan-style pizza that does not require a nuclear-powered 8000°C hot oven and the skills of a pizza ninja. The finished product will be chewy, airy, and doghy like this type of pizza should be. Read more

October 6, 2020

Fixing an Update Issue of Command Line Tools on MacOS Catalina

My homebrew had some issues with an outdated version of Command Line Tools (CLT). I tried to update the CLT manually using sudo xcode-select --install but the installer told me, that CLT could not be found on the Apple servers. Strange. I tried uninstalling CLT with sudo rm -rf /Library/Developer/CommandLineTools (this is Apple’s intended way of uninstalling the stuff) and installing it again with sudo xcode-select --install. Same situation. Now I rebooted the machine. Read more

September 11, 2020

Using OneDrive on Mac or Linux for Backups

Recently I discovered that I have access to Office 365 through my university. I am not interested in Office 365 at all, but my subscription includes 5 Terra (yes!) Bytes of OneDrive storage. This has aroused my full interest. But: the official OneDrive client is not really what I want, because I don’t want to synchronize stuff from a folder on my hard drive with OneDrive. I would like to “mount” OneDrive and use a tool, preferably BorgBackup or something similar, to transfer encrypted snapshots to OneDrive. Read more

May 22, 2020

xtables-addons: How to fix 'Can't open DBIP database' Error

When you are using the 3.8-* version of xtables-addons to harden your server with a geofense, chances are super high that things don’t work anymore… The latest problem occurs after you have downloaded the geo-ip-tables from Maxmind and try to convert the tables for the geofense with xt_geoip_build. You get this error: Can't open DBIP database. The simple reason for this is that the developers of xtables-addons decided to get rid of Maxmind (maybe because they did that thing with the user accounts a couple of months ago? Read more

May 15, 2020

MSMTP: Sending Mail With a Linux Server

If you are running a Linux server, you probably want to enable that thing to send emails to you. This is useful, for instance, to tell you that someone got blocked by fail2ban. In earlier years, SSMTP has been a good candidate to achieve this kind of thing. Today, Debian, Raspbian, and probably Ubuntu server OSes have no packet for SSMTP anymore. However, you can use MSMTP to achieve the same thing. Read more

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