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nelgaard

179 karma · joined January 25, 2019

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nelgaard··on The end of the accounting search
The same in Denmark from next year. What is missing in GnuCash is mainly some support for e-invoicing in

[https://en.wikipedia.org/wiki/PEPPOL Peppol]

Is anyone working on something like that?

nelgaard··on Why TinyML is still so hard to get excited about
Yeah, about 15 years ago when there were companies planning to replace barcodes with RFID tags on all products, a big selling point was that washing machines could detect red socks in a white wash.

Someone did make such a washing machine, from 2012: https://www.appliancesonline.com.au/academy/appliance-news/s...

Note the caption: "The washing machine's brains do the thinking for us".

nelgaard··on Why TinyML is still so hard to get excited about
Yes, with these kind of issues you need to keep it very simple.

I have an old Chromebook that runs Linux. I did have the problem that it would sometimes wake up in my backpack and run very hot. Eventually I found out that the plastic lid was soft enough that it would bend and let the screen touch the touchpad which would wake up the Chromebook. It was possible to disable this behavior but it was not simple enought.

nelgaard··on Laptop Brands with GNU/Linux Preinstalled
Most of us here on HN would probably install our own OS anyway. And many buying from the websites listed also would.

But if you could go to your local hypermarket and buy a cheap Linux-laptop, I bet many customers would be happy with the installed OS.

The last, and only, time something like that happened was 15 years ago with the Eee PC. I still have mine somewhere around.

nelgaard··on Loyal to the Company
I agree. And it does not even have to be personal.

For example I know companies that have done a lot to help an employee with a critically ill spouse. I would feel some loyalty even if the company helped a colleague.

And there are some jobs where employees risk getting unpopular with customers, colleagues, the public, etc. They should take note of whether the company tend to support its employees or throw them under the bus, even if they did nothing wrong.

nelgaard··on See inside a 958-foot cargo ship (2022)
I have visited some of those Maersk ships.

The crew quarters and the living areas are nice. Some of the ships even had a swimming pool.

It is possible because they have a very small crew relative to the size of the ship.

The red and white checkered tablecloths are traditional danish style (colors of the flag, i guess), and probably oil-cloth which is easy to clean and provides some friction when the ship is rolling in the waves.

nelgaard··on Tipping Is Spreading and It Sucks
The same here in Europe. But they are getting US-style terminals and software here.

Sometimes waiters get a little embarrassed about it and tell you to just put in a zero amount. Sometimes they even put in zero themselves before handing you the terminal.

Tipping does happen, but "suggestions" for a specific amount or percentage seems wrong. Then you might as well include it in the price, which is what we have been doing since 1969.

nelgaard··on The $20 an hour Cessna 172 experiment (2020)
Cars are a lot cheaper, taking inflation into account and before taxes (I am writing from Denmark) And they are much better. You can get a small car with ABS brakes, airbags, radio, air-conditioning, a fuel-efficient engine, etc that drives really well, for two months salary.

Tanks and jets are probably much more expensive. But some of that is because there is literately an arms race.

You need to pay for something that is much better than you had before or you service men will die because the enemy did get something that is better and more expensive.

I would love to own a classic sports car. I would happily pay for the extra fuels and take the risk of not having airbags, ABS brakes etc.

I am grateful that I do not have to go to war. But if I were, I would not want to do it a "classic" tank or fighter jet.

Now Ukraine is getting our old Leopard 1 tanks which have a lot of firepower and moves fast but have less armour than modern tanks, which might work because the Russians most have old tanks left.

But there is a good reason that European countries have bought Leopard 2 tanks that are much more expensive and 24 tonnes heavier.

nelgaard··on The ingenious design of the aluminum beverage can (2015) [video]
There are more sturdy multi-use plastic bottles that may be as good at keeping the pressure as aluminium cans. But not as good as glass bottles.
nelgaard··on The case for flywheel storage in the Philippines
Energy storage does not scale exponentially with speed. Kinetic energy increases quadratically with the angular velocity.
nelgaard··on Blank cassette tape types and how to choose the right one
Yes (depending on the modulation), just as the bits on a CD corresponds directly to the frequency.

Vinyl records have limitations determined by design decisions and physical properties.

For example deep bass and stereo separation are reduced on vinyl or the stylus would jump out of the groove.

And vinyl records have a lot more noise than good digital formats.

nelgaard··on Japan’s business owners can’t find successors – one man is giving his away
Yes, also traditionally the business would go to the eldest son. He then knew all his life that it would become his business and prepared for it.

Now it can go to all sons and daughters. That means that the one best suited can be chosen.

But all the children will have to build a career. And none of them feel particular responsible for continuing the business.

nelgaard··on Unintended consequences of blocking IP addresses
Just because someone is setting up blocking does not mean that a law has been broken.

Blocking is often used as an easy alternative to prove in courts that laws has been broken.

For example considering the list mentioned in the article (and I do not know which ones affected cloudflare): http://netzsperre.liwest.at/

Why should a US company censor a Russian website (rt.com) because it is on a Austrian list because of a EU regulation? Austrian citizens reading rt.com are not breaking the law.

And I better add, that I am not claiming that the content of those sites are trustworthy, but I do feel insulted that they do not trust me to read if I want to.

nelgaard··on Breaking RSA with a quantum computer?
The distribution part have gotten a lot easier. I would be very possible for banks to give all their customers USB devices with a few GByte of one time pads and keep a copy of those same GBytes in their own systems.

And most banks still have brick-and-mortar stores where customers could come and identify themselves and collect their one time pad.

And a GByte of keypads would cover your banking need for a long time.

The problem is more that it works for some one-to-many relationsships such as banks, but not many-to-many relationships, such as emails, websites, etc. There have to be second or third parties.

On the hand, a lot of people seems to log in everywhere with Google Sign In or similar anyway.

And we could instead all have Google or Amazon devices with GBytes of one time pads. And that could be used to set up symmetric encryption, which should be more resistant to quantum computer attacks.

The only drawback is that we would have to trust the third party and everyone who could compromise the third party and every government that could put pressure on the third party :-)

nelgaard··on Unintended consequences of blocking IP addresses
Why would they block their own customers?

And even if they did agree to block e.g., Austrians from accessing some webpages of some Cloudflare costumers, they would have to base it on some geolocation, which is just one more can of worms.

nelgaard··on PostScript: A Digital Printing Press
Yes, that was the big hope back then, that we would no longer need printer drivers. You could just just plug in any printer, or give an IP-address of a printer and it would immediately work.

Instead it got much worse. Now when you buy a new printer you have to check which operating systems is supported. My CUPS server has 2064 drivers just for HP printers.

Even though my printers actually do have postscript interpreters I can still not just plug them in to an USB port on any computer and print a document. It is crazy.

nelgaard··on The Queen’s Coup
Maybe not in those terms.

But the Queen and GC have dissolved (or prorogated) the Canadian Parliament as recent as 2008.

https://en.wikipedia.org/wiki/2008%E2%80%932009_Canadian_par...

nelgaard··on My Fanless OpenBSD Desktop (2021)
Yes, but you do not have to go that far to get a fanless desktop.

I have an Intel NUC running Linux (debian).

About 5 years ago I replaced the case with a fanless case (Akasa). It took very little time, there was just some screws and a cable to attach the USB ports.

The original case with fan was not particularly noisy. But it is just so much more relaxing working or reading without the fan.

nelgaard··on A rash of nearly lethal mushroom poisonings in Ohio
It it worse than not being an expert on local mushrooms. You can get fooled because you can find mushrooms that resembles mushroom from you home region, that you know to be edible.

E.g: https://en.wikipedia.org/wiki/Volvopluteus_gloiocephalus#Edi... == In the United States, there have been several cases of Asian immigrants collecting and eating death caps (Amanita phalloides), under the mistaken assumption that they were Volvariella. ==

That has also happened here in Denmark.

nelgaard··on I wish my web server were in the corner of my room
I also had a server in my bedroom.

The problem was that I only had mechanical hard drives back then and they would spin up all the time and make noise.

In 2001 I started to systematically search for the causes of the disk noises and document it at https://www.agol.dk/quietlinux/

E.g., I spent a lot of time finding out that CUPS was generating a new certificate every 5 minutes. Nowadays it is a lot easier to investigate things like that. Back then I was patching the kernel.

nelgaard··on Longevity of Recordable CDs, DVDs and Blu-Rays (2020)
We use square meters in Denmark. The diameter of a CD/DVD is 120 mm, so you can fit 64 CD's per m² if you order them in a grid (more if you do not) A CD is 1.2 mm think. The ceiling height in my apartment is ca 2.7m, so I could fit 14400 CD's per m². If a DVD can store 10 GByte, that is ca 144 TByte.

The average rent per square meter is about $20/month (more in Copenhagen, less outside the big cities).

I suspect I can not store 144TByte in the cloud for $20/month.

You might argue that I do have that many DVD's. But then I do have many small corners and shelves that is not much use for anything else. And it would be even more unlikely to be able to store say 14 TByte in the cloud for $2/month.

nelgaard··on NTSB Calls for Alcohol Detection Systems in All New Vehicles
During the 2016 Fort McMurray wildfire, tens of thousands of people escaped by driving through the fire. Statistically some of them were probably over the limit. And the police were most likely too busy at the time to override lots of alcohol detection systems.

And how reliable are the Alcohol Detection Systems in a smoky environment?

nelgaard··on Woman sues after DNA from rape kit used to arrest her
So if the cop knocked on the door because he suspected homicide and discovered a rape, they should just ignore it?

And anyway, what is a lesser offense? Drug trafficking are serious offenses if you go by maximum sentences.

nelgaard··on The world’s first hydrogen trains started passenger service in Germany
There is no deal. They just signed a "joint declaration of intent". They still have neither the wind turbines nor hydrogen production facilities.
nelgaard··on Large scale Internet SSH brute force attacks seem to have stopped here
Today someone tried violetta, admin123, rian, phoebe, carlos, calla, es, weiguo, bzrx1098ui and many more on one of my servers.

I guess attackers has gotten a hacked password file and hope that some of the users have used the same username and password combinations on other servers.

Searching for bzrx1098ui showed that attackers try with the same logins on many servers. E.g., https://dataplane.org/signals/sshidpw.txt

Most of the passwords on that list are silly, but not all of them E.g.: )w%WLq^3UAwn 75afaf6480ca5f9c214fabb6e3663813 7h4a5n9d0a2oiang@))* 960c3dac4fa81b4204779fd16ad7c954f95942876b9c4fb1a255667a9dbe389d

The last one is used at: https://github.com/tlaverdure/laravel-echo-server/issues/273

and https://www.digitalocean.com/community/tutorials/how-to-secu...

Which mentions that is can be generated as: echo "digital-ocean" | sha256sum

Apparently Digital Ocean was telling people in 2014, that feeding a weak password to a hash function would result in a longer and therefore very strong password.

I am sure there are plenty of people that would use sha256sum("password")= 6b3a55e0261b0304143f805a24924d0c1c44524821305f31d9277843b8a10f4e as a password in a redis-file. But it is not something you would type in every time you ran SSH.

So maybe someone is just trying to use a search engine to find passwords made public.

nelgaard··on Ask HN: Which Linux terminal emulator do you prefer and why?
termit.

I just want unicode and tabs and a way to set background and foreground colors.

I also like lxterminal and of course the emacs shell.

I did try kitty after reading this, but is failed because of my openGL configuration. Silly.

nelgaard··on Why Linux Succeeded
You might take code from there. But you cannot take code from OS X and add it to Darwin. And that is why I cannot just install Darwin and run it on my computers if I wanted to use e.g., network cards.
nelgaard··on Map Data: False Assumptions
It is too precise for an absolute global position.

But for relative posistions, i.e. the difference between to positions, 1 cm is about right. It is close to the resolution in the best aerial images.

So if you you want to map e.g., a park bench as a 2-dimensional object og the layout of railway tracks you need the precision.

When you zoom in a lot on a digital map you still want the details even if it is all off by several meters.

Just as you can have detailed printed maps of a small area.

nelgaard··on Ask HN: Why aren't code diagram generating tools more common?
Yes exactly. There are no tools that can build proper mental models.

Most of a system is either uninteresting or trivial. You need someone to tell you where the interesting part is.

nelgaard··on The age of the fast self-checkout lane is over
My experience is that no society trust you to be old enough to buy a few beers. So you have to stand there and wait until someone comes and look at you.
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