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hultner

807 karma · joined December 18, 2014

Founding CEO of ⠠⠵ Hultnér Technologies AB.

Currently living in Sweden.

@ahultner https://twitter.com/ahultner

[ my public key: https://keybase.io/hultner; my proof: https://keybase.io/hultner/sigs/0CfIA8T82M-zsNqbBSwLDXLDH2I1z2AUdEVBsJHtKYM ]

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hultner··on Making espresso with ultrasound
I jumped on this at first as well. But to be honest if their target demographic is industrial production of coffee like beverages (like those Star Bucks soda can ”coffees”), well then it might not be so bad. I was thinking that a lot of flavour compounds of espresso breaks down quite rapidly while the drink cools, so the method of cooling all drinks to equal temperatures could be enough to skew the results regardless, but again for commercial coffee based soft drinks this is already the case. Headline is a bit misleading though.
hultner··on Making espresso with ultrasound
Considering the vibrations from those capsule machines it might not be so far off
hultner··on Making espresso with ultrasound
According to the article they see the main use for industrial scale production of coffee/espresso based drinks, in that regard it does make sense. For home use not so much even if there could be some niche market for cold espresso drinks at home, using less ice would allow for less dilution and faster than prepping and then refrigerate the coffee. I sometimes put concentrated ice coffee into my whey/oat shakes, but this is indeed very niche use even for me.
hultner··on IBM AI ('Bob') Downloads and Executes Malware
Isn’t the problem that it’s supposed to not execute commands without strict approval but the shell stdout redirection in combination with process substitution is bypassing this.
hultner··on Claude Code 2.0
A real CLI and not that joke they called a CLI before?
hultner··on I use zip bombs to protect my server
Works fine on my 5 year old iPad Pro with an A12 processor.
hultner··on Show HN: TextQuery – Query CSV, JSON, XLSX Files with SQL
Can you use that with for instance a postgres server? I thought it would only work with DuckDB (sqlite?) databases.
hultner··on Show HN: TextQuery – Query CSV, JSON, XLSX Files with SQL
I actually have some apps still which I bought for life years back but doesn't offer that anymore. For instance blink shell for iOS devices.
hultner··on New iMac with M4
You probably know this but it’s possible to buy a controller card for the panel on Ali Express and retro-fit into the case and use as a monitor if you are ready to retire the computer itself.

I’m contemplating doing this myself at some point but my maxed out 2019 iMac upgraded to 128GB ram and extra SSD is still plenty fast for me, actually feels subjectively quicker than my M2 Pro MacBook Pro with significantly less ram feel. I was a bit surprised as I had read all the hype of the responsiveness of the Apple M-machines.

hultner··on Number 16 (spider)
Then I will put this one on my to read list. I actually re-read the book by Vinge recently after he passed.
hultner··on Number 16 (spider)
I have not read this but I can recommend Vernor Vinges book “A Deepness of the Sky” on a similar theme. https://en.m.wikipedia.org/wiki/A_Deepness_in_the_Sky
hultner··on BIMI and DMARC Can't Save You: The Overlooked DKIM Exploit
Interesting, does anyone have a list of known providers vulnerability to this in the past? I'm thinking big providers like G-Suite, Office 365, Zoho, Fastmail, etc.
hultner··on New startup sells coffee through SSH
I can only talk from personal experience I did not trust most online payments around the turn of the millennium, but I did order quite a few things online. I usually payed either by collect on delivery or by invoice like regular good old fashioned mail-order, or by the early 00s VISA had something called e-card or similar, where you could generate a temporary one time use CC via a Java applet, this card was only valid for a day and could only be charged by a pre-determined amount, making the risk very low.
hultner··on Soul: A SQLite REST and Realtime Server
Cool! Are you doing this mostly as a fun exercise or do you have a plan to provide something postgrest does not in the future?
hultner··on Soul: A SQLite REST and Realtime Server
From what I can see this doesn't contain any kind of permission model, or authentication. At least what I could see in the documentation. I would say that RLS is one of the big killer features for postgrest which makes it so great for rapid prototyping something that's actually useful when exposed to the open internet.
hultner··on I need more USB power
Isn’t this the reverse? Providing USB-C rather from a power source rather than powering from a USB-C supply.
hultner··on Development Secrets of the Original Kirby [video]
Oh played Kirby’s Adventure so much with my cousin on the NES growing up. Fond memories.
hultner··on Removal of Mazda Connected Services integration
This is what I would usually do as well, self-MiTM and analyze the traffic, reverse engineer from there.
hultner··on Show HN: ElectricSQL, Postgres to SQLite active-active sync for local-first apps
I have a side project where this would fit perfectly. I’ve for a database in Postgres and my plan have been to sync the data into a local SQLite for a react-native app which needs to work offline and with flaky connections, to then later sync it back into PG. I have never gotten around to actually build the sync and it looks like this could solve that problem.

Does this play nice with RLS? I’m running everything on Postgrest at the moment.

hultner··on Expo – Open-source platform for making universal apps for Android, iOS, and web
Would you mind sharing this? I’ve only used expo for experimental non-production apps so far but it works be great to be able to do this if ever needed. Reading this thread makes me a bit more hesitant about using expo.
hultner··on Sweden Sans
I’ve been experiencing this intermittently lately as well.
hultner··on You can deactivate anyone's WhatsApp account by simply sending an email
Microsoft have a similar problem relaterade to them merging a lot of services but not accounts. I have an old Xbox Live account on my Xbox 360 which I can’t reset the password for since the email/username was the same as for my Skype account and my Hotmail/MSN account back in the days. This mess is still causing me tons of problems anytime I try to log in to something Microsoft related.
hultner··on Show HN: Workout.lol – a web app to easily create a workout routine
Not sure I agree. At a point in my youth I ran 3000 miles in a year based on motivation (college competition, I was really motivated to keep the number one spot in the leaderboard).
hultner··on The Mac Pro’s biggest problem is the MacBook
Just curious but wouldn’t a Mac Studio paired TB4 PCI-E expansion board/dock fill this same purpose? Is there something inherently in the Apple ARM arch preventing this? I’m still on a Intel iMac where such a solution works a charm, so my natural upgrade path would be a Mac Studio and display. Of course you are still limited to your thunderbolt bus but I guess TB4 is good enough for a lot of PCI-E use cases.
hultner··on Robot can rip the data out of RAM chips
Or you know a can of bottled air upside down and a bootable usb will do it unless the efi is locked down and USB-boot disabled, in that case you also need to move it over to your own laptop.
hultner··on The EU suppressed a 300-page study that found piracy doesn’t harm sales (2017)
I’ve seen my fair share of web-apps where the subscription check is entirely client side JS and a simple self MITM is enough to bypass payments. Not saying this is the case in this particular instance but it’s definitely something I’ve seen more then once.

I’ve brought it up as an issue with some companies but I’m usually met with a shrug and a response in the realms of “our users wouldn’t know how to do that”. I’ve even seen car charging poles with entirely client side JS to validate account/login to charge for the electricity.

I too have grown up, playing games with a hex editor in one hand and tcpdump in another so I have a habit of poking around to see how stuffs made.

hultner··on OpenSSH versus SSH
Yeah I was thinking of something like that. But I still feel a bit uneasy with configuring OpenSSH securely, I’ve escaped such setups before, gaining full shell access through exploits. Maybe I’m overly paranoid.
hultner··on OpenSSH versus SSH
This makes me think about something I thought of a while back, is there any library/app which lets me expose a TUI/cli-app over ssh without actually caring about securing OpenSSH for this use case?
hultner··on Fun with fluorescence in olive oil (2012)
Is the article published free somewhere?
hultner··on Craziest thing I ever used SQLite for: partial file deduplication (2022)
Yes this is what I do, and I wouldn't have dedupe for all datasets, for instance in this case he wanted dedupe on his games, so I would just enable it for that dataset.

But I do run disk-wide compression with no problems and have done so on all my datasets for many years now, and it's been a tremendous space saver. Especially on machines where I have a lot of VMs/containers, it's not unusual for me to have a compression ratio of 2 on these with good old lz4, it will be interesting to see what damage zstd will do once I start experimenting with that.

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