https://hillenius.net/index.xml

A note on merging fail2ban with firewalld on Debian, so all bans are applied through firewalld.

Server upgrade from Debian 12 (Bookworm) to Debian 13 (Trixie) took 40 minutes.

On Friday, RTBF reported on the migration of the Common Crane.

The ultimate way to read, send and manage email (and RSS feeds, and Usenet) is with Emacs Gnus.

I've installed Guix on a ThinkPad X1 Carbon 5th Gen, as an experiment.

"Wasp mothers have stunning brainpower when it comes to feeding their young, according to new research", the BBC reported the other day.

Matto and I are sharing our Transient Menu for Elpher, entitled TMelpher.

In three steps, you can create a VM to run any 'Old Debian release'.

For fun, I'm helping Matto create a Transient menu for Elpher, the Gopher and Gemini Client available as an Emacs add-on.

It could be time to modernise the expression.

Matto challenged me to accept the "Blogging Challenge 2025".

For those running Debian and derivatives: is Emacs' worldclock showing Bangalore ASIA instead of IST?

The password needs to be in quotes.

I am experimenting with Ollama and Ellama.

Copies of my blog posts are available as Gopher posts.

This shows how to record an Emacs demo using Asciinema.

A short blog to remind myself to combine Org-Tree-Slide and Writeroom-Mode, the next time I do a presentation.

Along with the update of Honk to version 1.2, I add a systemd timer to keep its database lean.

Mixing Debian with Nix in 2023 (updated from 2021)

Cleaning up whatever is in .cache/common-lisp helped me get around issues that began with the update of slime and swank to version 2.28 in Debian unstable.

For fun with Common Lisp and to help solve a certain puzzle - but just a little bit - I wrote a set of tools to analyse words of just five letters.

This is for those who combine Spamassassin, Exim and Debian-spamd, and wish to fix those nonexistent spamassassin user_prefs: "No such file or directory" errors and others.

A warning for all sysadmin using Exim on Debian Bullseye, don't switch to Debian Bookworm just yet.

A warning for all sysadmin using Cyrus imap on Debian Bullseye, don't switch to Debian Bookworm just yet.

To create documents, presentations, spreadsheets and the like, nothing beats Emacs with two or more users collaborating simultaneous in the same buffer.

I needed a pie chart, and had very little time.

The fix?

Mixing Debian with Nix, my first steps.

To catch the partial solar eclipse at noon today, a colleague at work reminded me to use a skimmer (a spoon with lots of tiny holes), to project the sun on a clean surface, for example good quality paper.

How to install GNU Social and ActivityPub on Debian 10 or 11.

This is my personal blog website.

On the top left: Jupiter with at least four moons - one on the left, and three on the right.