JoachimSchipper

6 ms·

1.
by JoachimSchipper 9d ago
Nice to see more people getting nerdsniped by the sh code. ;-) Yes, associative arrays work well. I think it should even be possible to use bash associative arrays. But at that point you're no longer doing classic sh - awk is basically
2.
by JoachimSchipper 9d ago
The sort is on line numbers, as aozgaa said. Again, the paradigm here - and this is designed for a different time - is that your data most definitely does not fit in RAM, so you use sort(1) to sort on disk and run your software using only c
3.
by JoachimSchipper 9d ago
The general point is true, but the shell pipeline gets a lot more elegant if you use the sort-and-accumulate paradigm that the classic shell utilities were written for (which uses O(1) memory, by sorting on disk). Using mostly the author&
4.
by JoachimSchipper 3mo ago
In a way, but note that the government actors here have Opinions on the Chinese having capable models.
5.
Stop MitM on the first SSH connection, on any VPS or cloud provider(joachimschipper.nl)
137 points by JoachimSchipper 4mo ago|77 comments
6.
by JoachimSchipper 8mo ago
FS is almost certainly fs.com, who do sell lots of fiber stuff. I agree that less-than-milspec equipment should survive being installed in a home, but... this fiber didn't. https://news.ycombinator.com/item?id=46572962
7.
by JoachimSchipper 11mo ago
Thanks a lot for your response!
8.
by JoachimSchipper 11mo ago
(Hopping in here because the discussion is interesting... feel very free to ignore.) Thanks for writing this up! It was a very interesting read about a part of networking that I don't get to seriously touch. That said: I'm sure yo
9.
by JoachimSchipper 1y ago
You're commenting on an article about people consuming less than $3/day; Americans on food stamps (SNAP appears to be about $4-6/day alone, not counting any other benefits) are a distraction, simply not part of the population
10.
by JoachimSchipper 1y ago
Picking anything but PlantUML's default theme will make PlantUML look less 90's-Java. As a minimalistic solution, I already like "skinparam monochrome true" https://plantuml.com/skinparam#:~:text=Black%20
11.
by JoachimSchipper 2y ago
I really like this article. I do think it's useful to consider that the unit of isolation ("process") of the cloud era is a VM or container, and that the major clouds do have some sort of permissions model.
12.
by JoachimSchipper 2y ago
The error rate is given per bit, not per second, i.e. every few bars represents a distinct DRAM chip. That makes some sense, and the article explains quite well why DRAM would behave like that... but I agree that I had to read the article a
13.
by JoachimSchipper 2y ago
marktplaats.nl is the big "eBay-like" for the Netherlands.
14.
by JoachimSchipper 2y ago
It's not ideal, but it's not a cryptographic risk. Using an encoding that (like Protobuf) has multiple representations for a message may cause you problems if you switch implementations - sha256(encode(msg)) might yield different
15.
by JoachimSchipper 2y ago
I was also thinking of promise pipelining, but note that the article proposes communicating A -> {B, C} -> D, never directly communicating from A to D. Cap 'n Proto "level 3" nodes could send promises from B and C to
16.
by JoachimSchipper 2y ago
One pitfall to consider: software development is often its own culture, and nourishing and valuing (or merging!) multiple distinct cultures in a company requires real effort from leadership/management/team leads/senior ICs&#x
17.
by JoachimSchipper 2y ago
The GCM (or XSalsa, or...) nonce is not secret - in almost all protocols the nonce goes over the wire in plaintext! - but must be a number-used-once. Those are quite distinct requirements.
18.
by JoachimSchipper 2y ago
All other things aside, if a bunch of articles get written about the phone, a lot of people think of Heineken ;-). I'm far from a marketing expert, but I have definitely seen less effective marketing campaigns.
19.
by JoachimSchipper 3y ago
That is on IEEE, not on the author - the article was originally published on the (fast, ad-free, privacy-preserving) author's site at https://berthub.eu/articles/posts/a-2024-plea-for-lean-softw...
20.
by JoachimSchipper 3y ago
Why did you make epithaps? Any interesting organizational or technical challenges you encountered on the way?
21.
by JoachimSchipper 3y ago
It's partly a cost saving exercise, but also: running "chroot /var/empty /some/shitty/code" or putting "chroot /var/empty /some/shitty/code" in inetd.conf is useful
22.
by JoachimSchipper 3y ago
Yes! After a bit of playing around, I can follow Rust reasonably well... but only with an IDE, which I've never used for C or even really for the bits of Java I wrote. I understand that many more experienced Rust developers are similar
23.
by JoachimSchipper 3y ago
RSA-1024 is also a rather aggressive / dangerous choice, even before a quantum computer arrives: NIST SP 800-131A rev2 Table 2 and 5 forbid use of anything below 2048-bit RSA. Academic teams have actually broken up to RSA-829: https:&
24.
by JoachimSchipper 3y ago
Yes, this is cool - thanks to fly.io for documenting and open-sourcing it!
25.
by JoachimSchipper 3y ago
I may just be confused, but couldn't you pass a pipe into the whole (server) process, instead of having it open its own sockets? (In https://github.com/jart/cosmopolitan/blob/48b2afb192ec18eca4... , I gat
26.
by JoachimSchipper 4y ago
FWIW, you can also get a mouse that wirelessly talks to a USB dongle, i.e. the interface to the PC is USB (which OpenBSD does support); the first hit I got is https://www.amazon.com/Logitech-M185-Swift-Wireless-Mouse/dp
27.
by JoachimSchipper 4y ago
The article links to https://d1e00ek4ebabms.cloudfront.net/production/7ab64a3b-6c...
28.
Tether's Troubles in November 2022(kalzumeus.com)
2 points by JoachimSchipper 4y ago|0 comments
29.
by JoachimSchipper 4y ago
> Compute-optimized (C) instances can substitute for a general-purpose (M) instances of half the size They do have the same amount of memory (and twice the CPU). But if you run a workload that automatically scales to the number of availa
30.
by JoachimSchipper 4y ago
traceroute(1) uses the IP Time-To-Live (TTL) field, not network latency. So just a bunch of virtual interfaces on a suitable *nix should be enough.

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