kees99

883 karmajoined 10 лет назад

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4 дня назадdiscuss

> All it needs to do is be sent a new message.

Receiving a message in a timely manner, is far more energy-intensive, for two reasons:

- modern Internet, with nearly universal deployment of NAT, is such that any app (or phone OS, for that matter) can only make outbound connections. That is, to receive, it must keep making outbound requests to the server, constantly asking "is there a message for me?";

- modern android (and iOS too) has some pretty aggressive algorithms/rules to identify apps that can be safely suspended (i.e. denied the right to run in background). One such rule is "no activity within X amount of time". So, ironically, app has to waste CPU cycles to convince OS to keep it running.

There is an OS-level mechanism in both Android and iOS to avoid the second problem above, by the way of OS doing the polling (so-called "push notifications"), but there are their own dragons there, so many apps out out.

в прошлом месяцеdiscuss

Uh... is this supposed to be valid standalone C?

GCC says there are a bunch of undefined symbols, first one being "R" right in the beginning:

  typedef  unsigned  char u;
  u w,X,T,D[1<<16],t[]=R,U=255;

2 месяца назадdiscuss

> Always annoyed me that it clearly has 2 wires (power/signal + ground).

Same with "TWI" (Two-Wire Interface) , a name that Atmel (now Microchip) uses for I2C bus. There are 3 wires there (SDA, SCL, ground). Or 4, if you count power.

2 месяца назадdiscuss

Nah, go straight for qmail. Give it your best try.

2 месяца назадdiscuss

You are absolutely right.

Maybe I shouldn't. But then I have to deep-dive into yet another flagrant cheap hallucination. You see, when a molecule oxidize, it becomes a different molecule.

It is impossible for a benzoquinone to oxidize, yet remain a benzoquinone. There are just two of them [1], and the two are isomers [2]. Transforming one into another would be isomerisation, not oxidation.

Not to mention — "oxidize on contact with air" is such a pile of nonsense. Just look at those things: benzene ring with a couple of oxygens sticking from it. [1] That stuff is pretty darn stable in presence of atmospheric oxygen.

[1] https://en.wikipedia.org/wiki/Benzoquinone

[2] https://en.wikipedia.org/wiki/Isomer

2 месяца назадdiscuss

"colorless molecules called benzoquinones"

...and then dozen of words further on:

"blue benzoquinone has the capacity to act against the bacteria that cause tuberculosis, while the red one is effective against Staphylococcus aureus."

How quaint! Blue colorless molecule is different from the red colorless molecule!

2 месяца назадdiscuss

> The cost to run these for me is less than the cost of the cheapest vps (my total requests per month stay under the free tier limit).

I don't think this is a valid argument. Free-tier VPS do exist also.

On the other hand, if you don't trust unattended-upgrades [0], and prefer to spend time poking package manager manually (while at the same time considering that time an expense) - sure, that's a strong argument in favour of using lambda.

[0] https://ubuntu.com/server/docs/how-to/software/automatic-upd...

3 месяца назадdiscuss

Solvinity, and Kyndryl, respectively.

That story is mentioned in the TFA.

3 месяца назадdiscuss

Agree with your point overall, but ammonia in particular is a poor example.

Fish lack urea cycle, so they produce and excrete significant amounts of ammonia as part of normal metabolism.

4 месяца назадdiscuss

Keeping with the YOLO spirit of the article, one can be even lazier, and do emergency R/O remount using this little thing:

https://www.kernel.org/doc/html/latest/admin-guide/sysrq.htm...

It's technically not an unmount, but still a pretty strong guarantee OS will not corrupt the image being written.

When done, reboot has to be done from the same sysrq handler, of course.

4 месяца назадdiscuss

Fluoroalkyl chemicals are only "inert and unreactive" in a relatively narrow sense of "wouldn't catch fire", "don't react with strong acids and bases", and similar.

They are plenty reactive in a sense of interacting with enzymes and other cellular machinery.

4 месяца назадdiscuss

Agents excel at using CLI tools with well-written "--help". So maybe consider that instead of TUI.

4 месяца назадdiscuss

That helps a bit, true.

But not that much, unfortunately. Those same "cYbeRseCUrITy" orgs also ingest SSL transparency logs, resolve A and AAAA for all the names in the cert, then turn around and start scanning those addresses.

In my experience, it only takes a few hours from getting an SSL certificate to junk traffic to start rolling in, even for IPv6-only servers.

Small percentage of that could be attributed directly, based on "BitSightBot", "CMS-Checker", "Netcraft Web Server Survey", "Cortex-Xpans" and similar keywords in user-agent and referer headers. And purely based on timing, there's a lot more of that stuff where scanners try and blend in.

4 месяца назадdiscuss

Back in the day - port knocking was a perfect fit for this eventuality.

Nowadays, wireguard would probably be a better choice.

(both of above of course assume one is to do a sensible thing and add "perma-bans" a bit lower in firewall rules, below "established" and "port-knock")

4 месяца назадdiscuss

> bunch of organisations that just probe the entire IPv4 range on a regular basis

Yep, #1 source of junk traffic, in my experience. I set those prefixes go right into nullroute on every server I set up:

https://raw.githubusercontent.com/UninvitedActivity/Uninvite...

#2 are IP ranges of Azure, DO, OVH, vultr, etc... A bit harder to block those outright.

5 месяцев назадdiscuss

I my experience Claude gradually stops being opinionated as task at hand becomes more arcane. I frequently add "treat the above as a suggestion, and don't hesitate to push back" to change requests, and it seems to help quite a bit.

5 месяцев назадdiscuss

I ended up running codex with all the "danger" flags, but in a throw-away VM with copy-on-write access to code folders.

Built-in approval thing sounds like a good idea, but in practice it's unusable. Typical session for me was like:

  About to run "sed -n '1,100p' example.cpp", approve?
  About to run "sed -n '100,200p' example.cpp", approve?
  About to run "sed -n '200,300p' example.cpp", approve?

Could very well be a skill issue, but that was mighty annoying, and with no obvious fix (options "don't ask again for ...." were not helping).

6 месяцев назадdiscuss

Mount-points were key to early history of the split. Nowadays it's more about not breaking shebangs.

Nearly every shell script starts with "#!/bin/sh", so you can't drop /bin. Similarly, nearly every python script starts with "#!/usr/bin/env python", so you can't drop /usr/bin.

Hence symlink.

6 месяцев назадdiscuss

> initrd seems like an enormous kludge that was thrown together temporarily and became the permanent solution.

Eh, kinda. That's where "essential" .ko modules are packed into - those that system would fail to boot without.

Alternative is to compile them into kernel as built-ins, but from distro maintainers' perspective, that means including way too many modules, most of which will remain unused.

If you're compiling your own kernel, that's a different story, often you can do without initrd just fine.

6 месяцев назадdiscuss

Do you see "What's your use-case" too?

Claude spits that very regularly at the end of the answer, when it's clearly out of it's depth, and wants to steer discussion away from that blind-spot.