I think (?) it’s generally true that the root user should never mess with users’ files.

Imagine your home directory is shared across many systems on a network (my alma mater did this). It would be really bad if a sysadmin for alpha.university.edu removed a program, and suddenly your personal settings were removed from beta.university.edu — even though that computer still has the program.

This is one of the “UNIX on the desktop” issues — a lot is designed for a sysadmin/multiuser situation, and it has some gotchas when using it as a desktop machine (I’m used to/really appreciate the directory structure and settings management at this point, but it may take some getting used to).

Any chance you have a DMZ set up on your router?

On your router, are there any settings specific to any host (other than the server maybe)? For example, a static IP or a port forwarded rule.

Do you have a VPN on the phones? Can you traceroute from your phone to the server and post that? (I like PingTools for Android.) You should have 1 hop (you -> server, nothing in between).

Can you verify that you are on the same wifi including same wifi channel? Phone on 5GHz but Linux box on 2.4GHz, for example.

Some mobile clients make it easy to accidentally downvote. I sometimes see that I accidentally downvoted a comment from time to time.

PingTools has been useful for me (though I mostly just use it for iperf).

Right, I just meant that you can’t sudo cat file > /dev/sda but you can sudo dd ..., because IO redirection isn’t elevated to root with sudo. I’m not saying anything too profound :)

Compiling a kernel yourself isn’t a big deal these days, especially with DKMS. Generally the type of people I’ve encountered who care about which kernel version they’re usiyare the type of people who are capable of compiling it themselves…

One caveat is that you will need write access to the drive, which probably means you need to run as root — can’t run that with sudo as-is, unlike dd.

Also a super useful tool for measuring real world bandwidth, both on physical media and over the network ( dd status=progress ... | nc ...).

Oh go fsck yourself (maybe that works better written…).

It’s also, in my opinion, the most verb-able of all *NIX commands.

Are they “forks” or are they “built on top of”?

Yeah, you can also find “crystal radio” kits — radio receivers that use only the received RF to produce sound (no external power source).

Is there any automation available for this? Do you fix them sequentially or can you parallelize the process? How long did it take to fix 450?

Real clustermess, but curious what fixing it looks like for the boots on the ground.

Also X often supported a different size viewport and desktop so the view would scroll.

I remember encountering that the first time I used Linux! Can’t recall personally finding a good use for it but…neat I guess?

Multiple desktops, 1999. What an amazing feature.

A quick web search suggests that macOS (then OS X) got this in 2007 (“Spaces”), and Windows not until 2015.

This alone makes this GUI more functional IMHO.

So 84,000 for a glass assuming 100% of the fluid is benzene (unless I misunderstood your calculation). Benzene concentration is about 1% of gasoline, and a tanker is about 20,000L, or ~40,000x more than a cup. Cube root of 40,000 is about 34 (cube root for the surface to volume factor). 34*100 is 3400, which is about 25x off from the 84,000 reduction required to be “safe.” So it’s roughly 25x worse than the Oregon cutoff (but seemingly within EPA limits, which appears to be ~1000x less stringent [!!!]). Unless I made some errors or misunderstood.

In any event I’ll try to source my cooking oil from uncontaminated trucks!

(As an aside, thanks for taking my question seriously and putting thought into an answer, unlike some of the other more “colorful” responses!)

…scaling laws. They are best illustrated with different sized items. Like a thimble, a coffee cup, or an oil tanker, all representing volumes of different orders of magnitude.

A simple, “your scaling argument doesn’t really apply since the amount of residue left behind scales with the volume, not area” would have sufficed.

Gasoline is a pretty powerful solvent; would residue left behind that doesn’t come off from gasoline be liberated by cooking oil? It’s an honest question.

And I sure hope the regulatory agencies and shipping companies in my country do a better job than in China. This sort of thing is terrifying; I’m just curious as to an emotionless analysis of how bad this likely is. What concentration of benzene is acceptable? “None” would be best but we already breathe it. Would contaminated cooking oil likely be equivalent to…inhaling once at a gas station? A wet martini with diesel instead of vermouth?

No shit.

My question was an honest scaling law question. Of course this is bad. Which is what I said.

My question is how bad, which is a legitimate question, and is not in any way saying these are defensible actions. They are not.

If you fill a thimble with diesel, drain it, and then fill it with water, that’s gonna be super gross — the diesel will probably form a thin layer on the thimble which is then diluted with a thimble full of water. Super gross. But by the time you get to a fuel can, the thin layer of diesel on the can is now diluted by a can of water. Because surface area scale like length squared but volume like length cubed, this is a better situation (for a given amount of water). Now when this is scaled up further, the diesel gets increasingly diluted. This is the root of my question, it’s not saying that we should accept this or that it’s good, I’m just curious.

This is obviously not good, but I don’t have great intuition.

If I have a mug full of gasoline (or worse, diesel or something cruder), and reuse that for coffee, I can imagine that being bad. But a tanker truck is humongous, and the contamination would, I imagine (???), scale roughly like a surface area-to-volume kind of thing, meaning that contamination for a huge container should be substantially “better” than my coffee example. (Perhaps this scaling law is a bogus assumption though?)

Of course it is still bad, gross, and probably dangerous…