Exactly, ansible is basically imperative, where write the steps declaratively.
Whereas nixos is more like a compiler that compiles to a working linux install.
If I added the software myprogram and a config file at /etc/myprogram.conf, that’s pretty easy in both. But if I needed to to then remove those it gets different .
With nixos it’s at easy as removing the two lines that add the program and the config file; after the next “compile”, the file is gone and myprogram is no longer available in the PATH.
With ansible you need to change the relevant step to use apt remove instead of apt install and to change the config file step in a step that removes the file.
Don’t get me wrong, ansible is still better than writing a lot of bash scripts, especially if you don’t have people with a lot of shell experience.
But tools like nixos and guix are on a whole other level.
<span style="color:#323232;">150 TWh / year
</span><span style="color:#323232;">————————— = 0,75 TWh / user / year
</span><span style="color:#323232;">200 million users
</span>
Banking system
Users
There are over 8 billion people on the planet today, let’s assume 4 billion of them have access to the global banking system.
Total energy consumption
The global banking system used an estimated 264 TWh in 2021[1]
If we assume the same consumption increase rate for banking, that’s about 348 TWh/year currently.
Energy consumption per user
<span style="color:#323232;">348 TWh / year
</span><span style="color:#323232;">————————— = 0,087 TWh / user / year
</span><span style="color:#323232;">4.000 million users
</span>
With these numbers, bitcoin uses almost 10x the energy per user annually.
There are of course a myriad of things one can argue over whether it makes a fair comparison, none of which I feel like arguing, since this is just a really simple estimate with a lot of assumptions.
1: I used the numbers in this article uncritically, if you have better numbers you can run your own calculations.
A photo of a russian twix-knockoff candy bar. The packaging is titled “Twin Pix”, it depicts a pair of twix-like caramel cookie candy with silver mountain peaks in the background. The person taking the photo is holding the candy bar in their hand. Grocery store shelves are visible in the background.
I am a distro-hopper, have yet to find my thing. I’ve recently been trying out NixOS, but decided to give something else a try, so after a lot of digging i landed on this KDE spin, which is based of the Bluefin Project. However, after having installed it via your typical installation of ISO Writer -> USB -> Install. I saw,...
How did you install nixos? The labels for disks and partitions are usually set during creation.
If the KDE-spin installer did not need to reformat the disks (i.e. the partition sizes and formats didn’t change) it probably didn’t touch the partition labels.
You can change the label if it bothers you, just make sure fstab doesn’t use the old label :)
On macOS the version on /usr/bin/bash is very old (bash 3 I think?), so many users install a newer version with homebrew which ends up in PATH, which /usr/bin/env looks at.
Protip: I start every bash script with the following two lines:
set -e makes the script exit if any command (that’s not part of things like if-statements) exits with a non-zero exit code
set -u makes the script exit when it tries to use undefined variables
set -o pipefail will make the exit code of the pipeline have the rightmost non-zero exit status of the pipeline, instead of always the rightmost command.
Blinky and Blinko (sh.itjust.works)
Rules that make you stare at gay people in your phone (lemmy.blahaj.zone)
This is a rule for help (lemmy.ml)
DAE Speech 100 int 1 run
"I don't want a large Barclay, I want a goddamn holo of Troi!" (lemmy.world)
Credit to Oddbin@lemmy.world for the idea
it'll take some time and patience (programming.dev)
The Bitcoiners were wrong: a blog post about privacy and bitcoin, and how they failed to design a cash alternative (unfathom.ing)
Ratchet effect rule (lemmy.blahaj.zone)
Rule (lemmy.blahaj.zone)
Twi[n Pi]x rule
A photo of a russian twix-knockoff candy bar. The packaging is titled “Twin Pix”, it depicts a pair of twix-like caramel cookie candy with silver mountain peaks in the background. The person taking the photo is holding the candy bar in their hand. Grocery store shelves are visible in the background.
Rockin' hard (lemmy.world)
Doomscrolling rule (lemmy.blahaj.zone)
Why did distro name carry over into label name of my ssd?
I am a distro-hopper, have yet to find my thing. I’ve recently been trying out NixOS, but decided to give something else a try, so after a lot of digging i landed on this KDE spin, which is based of the Bluefin Project. However, after having installed it via your typical installation of ISO Writer -> USB -> Install. I saw,...
Politics? In my space stories??? (lemmy.blahaj.zone)
General Advice for shell scripts
What do you advice for shell usage?...
When the universal translator malfunctions again (lemmy.blahaj.zone)
You Trekkies sure are a contentious bunch (lemmy.blahaj.zone)