In letzter Zeit mache ich aus gegebenem Anlass wieder mehr #SelfHosting. Natürlich achte ich dabei besonders auf den Stromverbrauch. Nach guten Erfahrungen mit der #ARM64-Architektur selbst bei leistungshungrigen Anwendungen wie Mastodon setze ich jetzt auch zuhause auf auf die aus Smartphones bekannte Technologie.

Es gibt zwar #SBCs mit offenerer Hardware, aber der #RaspberryPi ist überall erhältlich, gut dokumentiert, leistungsfähig und preiswert. Und es gibt ihn mit bis zu 16 GB RAM.

Wer einen Server am Internet betreibt, muss zügig #Sicherheitsupdates einspielen. Viele vergessen aber, laufende Software neuzustarten, damit die neue Version läuft statt der alten. Dabei hilft auf debianbasierten Linux-Systemen das Tool #needrestart, das leider meist nicht vorinstalliert ist.

Auf meinem Raspberry Pi 4 läuft needrestart schon immer korrekt (automatisch nach apt upgrade). Auf meinem Raspberry Pi 5 musste ich aber erst eine Konfigurationsdatei anlegen, wie es der Hauptentwickler hier beschreibt:
https://github.com/liske/needrestart/blob/master/README.raspberry.md
Bis dahin behauptete das Tool immer, dass ein reboot nötig sei, weil ein veralteter Linux-Kernel laufe.

Als nächstes will ich auf beiden Raspis die Festplattenverschlüsselung aktivieren. Das ist unter #Raspbian bzw. #RaspberryPiOS leider nicht so einfach wie auf anderen Debian-Systemen. Wenn ihr das geschafft habt: Schreibt gern eure Tipps!

#rpi #rpi5 #raspi #raspberrypi5 #homeserver #howto #til

#TIL there is a federated Gravatar alternative called @libravatar. I wish more projects would adopt it. 👍️

Today’s Vim discovery: `:x` vs `:wq`.

While `:wq` writes the file regardless, :x only writes if there are unsaved changes. It preserves the file's `mtime` if you just opened it to look around.

#til #linux #devops #vim #sysadmin #opensource

@w3c @ab @hdv @elena

🙏🏼 Thanks for the note! #TIL :

LLMs ....
➕ great for finding fitting names for new standards,
➕ vibe-coding demos,
➖ risky when writing minutes,
➖ introduce security and copyright trouble,
➖ need more energy than a human author and fuel the climate crisis.

It helps to agree on such. Keep up the good work.

@c_dan4th #TIL that, in particular, millennials and Gen Z are "alcohol-fluid" meaning they move between low/no and alcoholic and like that #CaskAle tends to be lower in ABV, but highly drinkable even as it warms up so they can drink slower. No mention of Colorado in this article unfortunately

#TIL: #Lego is not the original but a copy of a toy by British #Kiddicraft. Quite surprising that there were no legal battles, although Lego eventually bought the rights in 1981.

https://en.wikipedia.org/wiki/Hilary_Page#Kiddicraft

#TIL to write my first firefox webextension 🎉

https://github.com/nhurel/fed-down

hint: you don't need AI when you have the amazing MDN documentation available 💪
#development #webextensions #fediverse #mozilla #firefox #firefoxaddons

Today I learned from my medical transportation driver that in her home country of Eritrea in Northern Africa, they do not use timepieces. Instead they stand in the sun and are able to accurately determine the current time based on their cast shadow.

I thought it was so cool that they are so in tune with nature in this way, eschewing mechanical/electronic timepieces with their relentless heartbeats.

#TIL #MeasuringTime #Eritrea #Sundial

TIL: Baby open-ocean octopuses sometimes ride on jellyfish like little hats.

📸 Songda Cai, diver_sky on IG 🪼🐙🦑🌿

https://www.inverse.com/science/baby-octopus-jellyfish-rodeo

#Photographer #Photo #wildlifephotography #TIL

Alt...

A small paper nautilus octopus female riding on the top of a pink jellyfish.

Alt...

A dark orange octopus, possibly a male blanket octopus, riding on the top of a four tentacled jellyfish.

Alt...

A small octopus, possibly a male blanket octopus, riding on an octopus that is only about as large as he is.

#TIL how to add swap space easily on #OpenBSD

1) Create a swapfile made of many many 0's, in the size of how large a swapfile you want, so e.g. for 16gb:
$ dd if=/dev/zero of=~/.swapfile bs=1m count =16384

2) Add it as swap:
# swapctl -a ~/.swapfile

3) For great success, check it out to get warm fuzzy feelings:

$ swapctl -l
Device              512-blocks     Used    Avail Capacity  Priority
/dev/sd2b             17065992        0 17065992     0%    0
/home/puffy/.swapfile   33554432        0 33554432     0%    0
Total                 50620424        0 50620424     0%

One of my favorite things about being a parent is that I'm constantly learning fascinating facts about the world - stuff that I normally would not be exposed to.

My child's current obsession? Drawing flags.

So yesterday I bought her a book about flags and we learned about the #Wiphala (her favorite flag in the book) - "a square emblem commonly used as a flag to represent some native peoples of the Andes."

Find out more about it here:
https://en.wikipedia.org/wiki/Wiphala

#TIL

Alt...

a photo of the Wiphala flag. it's made up of 7 squares by 7 squares in different colors. from left to right: white, yellow, orange, red, mauve, blue and green. the next row has the same colors, one square off, so that each color appears in a solid diagonal pattern

#TIL that there is a command "units" for units conversion exists. In the #BSD world it was appeared in the #NetBSD then ported to the #FreeBSD 2.2.0, according to the "History" section in the manpage.

https://jlsksr.de/notes/24100102/

At least, for now I known that 19 liters equals to 30.89 vodka bottles, or 154.47 charkas (чарок, от «чарка»), or 308.94 shkalikoff (шкаликов, от «шкалик»), or 1.55 vёder (вёдер, от «ведро»).

Conversion rules lives in the simple text file in the /usr/share/misc/definitions.units and the own rules could be written in some text file in the same manner.

@rf

Alt...

Screenshot of Xterm window with some examples of units conversion with "units" command. Commands issued: "units -t '19 liters' vodkabottle", "units -t '19 liters' charka", "units -t '19 liters' shkalik", "units -t '19 liters' vedro". Their output already described in the main toot.

#TIL that HDD prices also increased (because of "AI") like the SSD/memory prices before. I was slowly building my home NAS, thinking that if I use HDD, not SSD, then I should race only with the possibility of Internet shutdown in my country and hope that I'll build the machine before the Internet will become unusable or completely turned off, and I will be able to preserve at least something from human knowledge and creativity. But … looks like for now I should race not only with censorship, but also with fucking "AI" corporations

The worst timeline ever, I never saw how the price of something was decreased in my life. When I moved to my city at 2008, the bus fare was near 18 roubles. For now it is 88 roubles — the 389% rise. Fuck this shit.

I think, one time the novel "Walkaway" from Cory Doctorow will become not a novel but a real-life. Because there are no mass-adopted solution for now — you could choose only in between "you own nothing and be happy" and "you own nothing and welcome to GULAG" . So the good enough solution — not to participate in that circus at all and walk away.

#rant #LLM #HDD

#PeerTube #VLC #podcast #videocast #MemeTheCat #Flokinho #PeerTubeCats #catsOfPeerTube #TIL

Vivendo e aprendendo, temos que tirar o chapéu também para o pessoal do #OpenBSD que presenteia o mundo ao desenvolver essa maravilha.

#OpenSSH #SSH #blambers #TIL #softwareLivre #freeSoftware

Alt...

Hackerman - meme do seriado Mr. Robot - Eliot Alderson (Rami Malek) posa com cara de esperto e braços cruzados, vestindo sua blusa de moletom com gorro, e mochila, em montagem que lembra o vídeo Kung Fury com um fundo 3D colorido e, em primeiro plano, a palavra Hackerman em letras brilhosas