IsoKiero

@[email protected]

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IsoKiero,

Not spesifically a tool to put on a USB stick, but Ventoy is worth checking. I’ve had a bit mixed results with it on older hardware but when it works it’s pretty easy to manage your carry-on-tools.

Can one recover from an accidental rm -rf of system directories by copying those files back in from a backup?

Well I’ve joined the “accidentally trashing your system with rm -rf” club! Luckily I didn’t delete my home directory with all the things I care about, but I did delete /boot and /usr, and maybe /var (long story, boils down to me trying to delete non-system directories named those but reflexively adding the slash in front...

IsoKiero,

That can be done, but as others mentioned, if you don’t have permissions/other attributes for the files it’s going to be a real PITA to get everything working. If I had to do that I’d just copy over the files, chown everything to root and then use package manager to reinstall everything, but even that will most likely need manual fixes and figuring out what to change and to what value will take quite a bit of time and complexity of it depends heavily on what you had running on the host, specially things under /var.

IsoKiero,

With some models it can be done, but they are delicate things and going over the whole keyboard will most likely result in a couple of broken mechanisms and/or missing hooks on keycaps.

IsoKiero,

For a single shot, not that much, as the projectile is on it’s way before any major movement of the barrel. But coordinated fire with multiple units become pretty much impossible as you need to realign the barrel after each shot. And, obviously, that thing is a hazard to the operators, so it slows operations down quite a bit.

But as shown here by Finnish military video it doesn’t have to be like that, you can use artillery effectively in the winter, even with older hardware. You just need to have auxiliary hardware for mounting the thing in place and have trained personnel to use them. For Ukraine, I don’t know if they’re lacking one or both of them in this and other similar cases.

IsoKiero,

My sons are in that age bracket and when they requested a laptops for themselves (older sister got one for school stuff) I “borrowed” decommissioned thinkpads from work, threw empty ssd’s on them and gave computers to boys with linux mint installer on usb-stick. Younger one got it running in couple of hours without any help and is actively learning on how to use the thing, yesterday he told me how he had learned to open software using keyboard shortcuts and in general is interested about the tinkering aspect of things. Older one has a bit more pragmatic approach, he got the installation done as well but he’s not interested about the computer itself as it’s just a tool to listen to a music, look up for tutorials for his other interests and things like that.

Both cases are of course equally valid and I’m just happy that they are willing to learn things beyond just pushing the buttons. But I’m also (secretly) happy that my youngest shares my interests and he’s been doing simple games with scratch and in general shows interest on how the computers, networking and other stuff actually works.

IsoKiero,

Bare feet are a bit clickbaity on the headline. That alone doesn’t mean much, but when it happens on a area where you should have full protective gear at the (supposed to be) sterile part of the manufacturing it’s of course a big deal. But it would be equally big deal if you just stroll there in your jeans and t-shirt with boots you stepped on a dog shit on your way to work. And even then it’s not even close of being the biggest issue on manufacturing where they constantly ignored all of the safety protocols, including ignoring test results which told them that the product is faulty.

IsoKiero,

I used to have X230 as a daily driver for laptop (I got separate desktop) and it’s a really nice machine for it’s size. Only the display is a bit lacking by todays standards as it’s only 1368x768, but for 150€ (give or take) it’s not too bad.

IsoKiero,

Almost any kind of grease will work. Moisturising cream, oil, butter, engine oil and so on. It’ll soften the glue and whatever residue your chemical leaves behind can be wiped off with hand sanitizer or a drop of soap. The trick, as you mention, is to use way less than what you think you’ll need to avoid mess.

My ubuntu installation broke completely

I think that installation was originally 18.04 and I installed it when it was released. A while ago anyways and I’ve been upgrading it as new versions roll out and with the latest upgrade and snapd software it has become more and more annoying to keep the operating system happy and out of my way so I can do whatever I need to...

IsoKiero,

You might be correct, but I haven’t found one that I’d like (not that I’ve really looked for one either). Maybe you know if there’s any Debian derivatives which do rolling releases?

I like cinnamon and I’ve been running mint on my laptop for quite a while and I like it, so I’m going with it right now and plan for my next distro-hopping needs more carefully when installing.

But in general I’d say that Ubuntu is far from what it used to be and the TLC the latest version wants is just something I’m not willing to put up with. If something breaks on a update then it breaks, but at least give me an option to choose when it happens.

IsoKiero,

Yes, I know. Existing drive layout however says that I need to repartition the whole thing and that says that I need to copy couple of hundred GB’s over to something else before reinstallation and so on, so it’s not a half hour job. And while I’m at it it’s better to do it right than half-ass it over a long, long period of time.

IsoKiero,

I haven’t been paying attention on the rolling releases scene, but I’m pretty sure there was no mature option back when I installed that thing in 2019 or so other than Debian Sid (and daily driving that used to be an adventure in itself, but it’s been years since I last had a system like that). With ubuntu since at least version 14 upgrading from stable release to another was pretty stable experience, but that’s not the experience I’m having today.

IsoKiero,

But regardless of that you can still daily drive it as your distribution and many do. That’s why I said it’s an adventure of it’s own, but if you know what you’re getting into and accept the reality with Sid it can work. Personally I don’t want to use it at this point in my life, but I used to run it for several years when woody was getting a bit old on packages and sarge wasn’t out yet (and I think I just continued with sid after sarge release).

IsoKiero,

You can still fuddle your way through even that scenario and retain a fully working system.

Or at least you used to have that option without too much of a headache. I’m pretty sure you can still do it tho, but the steps required to ‘rescue’ old installation tend to be more complex than they used to be.

IsoKiero,

Great piece of information. I personally don’t see the benefits with immutable distribution, or at least it (without any experience) feels like that I’ll spend more time setting it up and tinkering with it than actually recovering from a rare cases where things just break. Or at least that’s the way it’s used to be for a very long time and even if something would break it atleast used to be pretty much as fast as reverting a snapshot to fix the problem. Sure, you need to be able to work on a bare console and browse trough log files, but I’m old enough that it was the only option back in the day if you wanted to get X running.

However the case today was something that I just couldn’t easily fix as the boot partition just didn’t have enough space (since when 700MB isn’t enough…) even a rollback wouldn’t have helped to actually fix the installation. Potentially I might had an option to move LVM partition on the disk to grow boot partition, but that would’ve required shrinking filesystem first (which isn’t trivial on a LVM PV) and the experience ubuntu has lately provided I just took the longer route and installed mint with zfs. It should be pretty stable as there’s no snap packages which update at random intervals and it’s a familiar environment for me (dpkg > rpm).

Even if immutable distros might not be for my use case, your comment has spawned a good thread of discussion and that’s absolutely a good thing.

IsoKiero,

Would I be correct to assume that you’ve been hurt by Btrfs in its infancy and choose to not rely on it since?

I have absolutely zero experience with btrfs. Mint doesn’t offer it by default and I’m just starting to learn bits’n’bobs of zfs (and I like it so far) so I just chose it with an idea that I can learn it on a real world situation. I already have zfs pool on my proxmox host, but for that I hope I’d gone with something else as it’s pretty hungry for memory and my server doesn’t have a ton to spare. But reinstalling that with something else is a whole another can of worms as I’d need to dump couple terabytes worth of data to somewhere else in order to make a clean install. I suppose it might be an option to move data around on the disks and convert the whole stack to LVM one drive at the time, but it’s something for the future.

But I imagine you couldn’t care less 😜.

I was a debian only user for a long time but when woody/sarge (back in 2005-2006) had pretty old binaries compared to upstream and ubuntu started to gain popularity I switched over. Specially the PPA support was really nice back then (and has been pretty good for several years), so specially for a desktop it was pretty good and if I’m not mistaken you could even switch from debian to ubuntu only by editing sources list and running dist-upgrade with some manual fixes.

So, coming from a mindset that everything just works and switching from a release to another is just a bit longer and more complex update the current trend rubs me in a very much wrong way.

So, basically the tl;dr is that life is much more complex today than it was back in the day where I could just tinker with things for hours without any responsibilities (and there’s a ton more to tinker with, my home automation setup really needs some TLC to optimize electricity consumption) so I just want an OS which gets out of my way and allows me to do whatever I need to whenever I need it. Immutable distro might be an answer, but currently I don’t have spare hours to actually learn how they work. I just want my sysVinit back with distributions which can go on for a decade without any major hiccups.

IsoKiero,

Why I didn’t think of that. It whould have fixed the immediate problem pretty fast. I would still have the issue with too small boot partition, but it would’ve been faster to fix the issue at hand. But in either case, I’m pretty happy I got new distro installed and hopefully that’ll fulfil my needs better for years to come.

IsoKiero,

Broken computers aren’t really stressful to me anymore, but it sure plays a part that I kinda-sorta had waited for reason to wipe the whole thing anyways and as I could still access all the files on the system, so in the end it was somewhat convenient excuse to take the time to switch the distribution. Apparently I didn’t have backup for ~/.ssh/config even if I thoguht I did, but those dozen lines of configuration isn’t a big deal.

Thanks anyway, a good reminder that with linux there’s always options to work around the problem.

IsoKiero,

Best ones I have are registered after either a random thought or a brainstorming session. For me pronounceable is a must (at least to some extent), short is strong second and funny is of course always nice, but not necessity. Including TLD is always nice, but unfortunately it’s rather difficult at least with the TLD’s I usually use.

IsoKiero,

I’d say that single core performance and amount of RAM you have are the biggest issues with running anything on old hardware. Apparently, in theory, you could run even modern kernel with just 4MB of RAM (or even less, good luck finding an 32bit system with less than 4MB). I don’t think you could fit any kind of graphical environment on top of that, but for an SSH terminal or something else lightweight it would be enough.

However a modern browser will easily consume couple gigabytes of RAM and even a ‘lightweight’ desktop environment like XFCE will consume couple hundred MB’s without much going on. So it depends heavily on what you consider to be ‘old’.

The computer at garage (which I’m writing this with) is Thinkstation S20 I got for free from the office years ago is from 2011. 12GB of RAM, 4 core Xeon CPU and aftermarket SSD on SATA-bus and this thing can easily do everything I need for it in this use case. Browsing the web on how to fix whatever I’m working with at the garage, listen music from spotify, occasional youtube-video, signal and things lke that. Granted this was on a higher end when it was new, but maybe it gives some perspective on things.

IsoKiero,

Oh, right, the screen resolution is something I didn’t even consider that much. My system has 1600x1200 display and GPU is Quadro FX570. This thing would absolutely struggle anything higher than 1080p, but as all the parts are free (minus the SSD, 128G drives are something like 30€ or less) this thing is easily good enough for what I use it for and it wouldn’t be that big of a stretch to run this thing as a daily driver, just add bigger SSD and maybe a bit more modern GPU with a 2k display and you’d be good to go.

And 1600x1200 isn’t that much anyways, if memory serves I used to have that resolution on a CRT back in the day. At least moving things around is much easier today.

IsoKiero,

why many europeans will not fight for their countries aswell, there isnt a rich paycheck waiting you

I’m not many europeans, and I’m afraid you’re partly correct, but should the need rise I will fight for my country and any amount of money isn’t in the equation. I want my kids to grow up in a free country like I did and fight for it, like my grandparents did. I really hope things don’t escalate to that, but I’ll do it if necessary and I’m pretty happy I don’t need to go by myself.

From my current location you could reach Russian border in 3-5 hours by car (as it always has been) and I’m somewhat far away from the eastern border by our standards. Ukrainians are witnessing what our eastern neighbor is capable of all day every day and if I have anything to say for it it’s not going to happen here.

IsoKiero,

Unifi ticks most of the boxes you have. Wifi will work without controller and they act as an bridge, so DHCP and other services work as-is, VLAN support is there (if you want to use different SSID for different VLAN then you need a controller) and so on. I have couple of their APs and I’ve been pretty happy, but that being said, their push for their own cloud-only products and the way they manage updates, longevity and other stuff isn’t the best (to say the least). For now it works absolutely great for what I need it, but at the future situation may change with a short notice.

No idea about T-link, but mikrotik devices are interesting. For wifi I don’t have any kind of experience, so I can’t recommend them, but on paper they seem pretty nice.

IsoKiero,

I would say both. They have a lot of practise by now, but there’s no reason to publish every missed drop. And additionally the most impressive hits get more views/shares so their “presence” (of sorts) is amplified by the internet audience.

What are some KVM-over-IP or equivalent solutions you guys would recommend for guaranteed remote access and remote power cycle?

Currently, I have SSH, VNC, and Cockpit setup on my home NAS, but I have run into situations where I lose remote access because I did something stupid to the network connection or some update broke the boot process, causing it to get stuck in the BIOS or bootloader....

IsoKiero,

Lantronix has a product called Spider, which (several years ago when I used one) works wonders. To the host side it looks like a standard monitor, keyboard, mouse and usb. I’m not quite sure if they still actively develop that, but at least the product page is still available. It’s not cheap, so it might not be what you’re looking for, but I was impressed on what it can do (since the company I worked back then too care of the invoice). It can’t do power cycle or hit reset button, but beyond that it was pretty close to IPMI and other remote server management solutions.

With my own wallet I’d look for piKVM, but it’s not really cheap either and I don’t have any personal experience with it. For power cycle there’s a ton of companies who manufacure wall-warts which you can control over wifi, APC and other big players included, and for home gamers nodeMCU and shelly are solid options if you’re familiar with electronics, but they can’t do KVM over IP, so it might require using different products to remotely accessing the host and for power management.

IsoKiero,

That has quite a bit of limitations for that kind of use. Data logged can vary even several meters (as I assume it’s GPS based) and I don’t think it can differentiate between a mine and any other shrapnel laying around. What it can do is go trough fields quickly and offer coordinates for people to go in and manually verify & clean the area so they get at least a majority of things cleaned up faster than having boots on the ground sweeping every square meter manually.

And if that kind of drone was widely used to map out routes for tanks and other equipment it would offer an option to create artificial path and bury in C4 or some other explosive in the way which is invisible to metal detector.

IsoKiero,

to learn other tools like gimp or others.

If you’re doing anything professionally (even freelancing) that’s not often an option. No matter how good you are with gimp if client demands that you deliver PSDs to them. Even if you could model the next Titanic at the most beautiful way on freecad it’s worth nothing if client demands solidworks files. And so on.

Self imposed boycott is of course fine if it works for you. I’ve been using Linux since RedHat 5.2 as a daily driver, but since I make a living with computers as well I need to have Windows around for this and that. More often than not it’s of course paid by the company, but I’ve been doing freelance stuff as well and there I need to pay for my tools.

IsoKiero,

I’m not quite sure if ‘the man’ is reason for war… err, special military operation, but she’s free to have her opinion and at least there’s solid evidence of his existence unlike natzis and everything else used to justify the mindless attack going on with all of the war crimes.

IsoKiero,

900 personnel, 42 tanks, 44 armored vehicles, 25 other vehicles destroyed yesterday according to Ukraine (total, not just Avdiivka). Russians apparently within reach of Ukrainian artillery and creating a roadblock for themselves, so that kind of formation is almost a target practice, specially with live video from above.

IsoKiero,

Is there way to use a usb wifi card(tp-link) as the reciever and make it work?

No. The mouse is not a wifi device, and as it’s a old one I doubt it’ll support bluetooth either. So you really need the original dongle.

IsoKiero,

That very much looks like just a farmer who needs to put food on the table and had a welder on hand. The tractor itself looks like it’s more or less sacrificial as well, so if the mine clearing tool (or contraption, depending on how you look at it) at the front doesn’t do the job the rest is acceptable loss.

That kind of tractor is relatively simple to rig for remote control, all you need is a couple of hydraulic valves to do the steering and at minimum a one cylinder to engage clutch, or if that’s also driven by hydraulics then just couple of more on/off valves. Throw wireless cctv camera on top and you’re good to go. I suppose that wouldn’t check all the boxes for western security requirements, but if it gets the job done without injury or death I’d say it’s quite good enough.

IsoKiero,

That tiller (if that’s the correct term) in the back is a farming tool meant to break ground for seeds, it’s the modified snow plow at the front which is meant to clean mines. As it’s got pretty much the whole tractor keeping it on the ground it most definetly has enough pressure to trigger mines, the rollers might not take more than one direct hit, but they seem to be relatively simple to replace.

Personally I’d go after something which military uses instead of rollers, where it has motors to spin chains which then detonate the mines, but that’s a bit more complex to build and you need more parts than a few bearings and a grinder+welder, so that might not been an option for the guy who built the thing.

IsoKiero,

My thinking anyway, I don’t actually know anything about mine clearing. I do know some about farming though.

I’m in a very same boat, I’ve been sitting my share on a tractor cabin turning ground around and smoothing it, but our fields don’t luckily (now, at 1940s it might’ve been a bit different at the eastern border) have mines to worry about.

IsoKiero,

The ones I have go trough the onboard voltage regulator and you can use them to power USB-devices. I suppose they’ve skipped diodes and other protective components so it can feed back to the circuit, but I haven’t tested that.

IsoKiero,

At the top of the screen you can see errors from LVM setup where it’s searching for a volume group that’s not there. I have absolutely zero experience with gnuinos, so no idea how that could’ve happened, but at some configuration file (I’d look from fstab first) there’s a mention of gnuios-vg and the actual device name is something different.

IsoKiero,

Kill and torture citicens, force remaining people to join your dictatorship, draft them and give them military training and guns. What could possibly go wrong with that plan?

IsoKiero,

And they seem to work at the extreme end of range to start with, there’s plenty of footage where on-screen indicators warn about weak signal. That of course makes sense, since the operator needs to have a safe space to focus on the controls instead of worrying about incoming fire, so they’re either safe distance away or in a bunker/something which reduces the effective range.

IsoKiero,

You most likely already have one installed, but not enabled. It doesn’t harm anything (maybe you need to allow traffic to ssh or other configuration, but after that you’re all set) and it’s a layer of protection, specially if you need to move between networks (public wifi etc).

IsoKiero,

Maybe he’s referring that Ukraine only attacks military targets and that they’re pretty accurate too, so there’s no danger as long as you stay away from military bases. Who knows. Seems like a nice place for a vacation tho, but I’ll wait a bit before booking tickets.

IsoKiero,

Using a pre built solution is fine.

I’m old enough that it was pretty much a requirement to configure and build your own kernel (2.0 or 2.2, so not that old mind you) among with a ton of other software with linux. Today I’m just happy I can throw an ISO on a USB drive and have a well usable system on a bare metal in less than hour where pretty much everything just works. Since there was so many things that didn’t work until you compiled drivers, wrote configurations and spent hours and hours debugging and testing your solution. Sure, specially back then with a lot less duties for kids and family, the tinkering itself was part of the fun, but today when I just need a system which has tools I need either straight out of the box or after a few apt install’s so that I can get the stuff done I need to I don’t have time nor energy to spend setting up everything.

And with that mindset I could rant quite a lot on why I don’t like the ubuntu installation on my current workstation setup (to be honest, not all of the problems are caused by ubuntu, nvidia has part of the blame and then there’s some poor planning with accessories). I want a system and tools that get out of my way and let me do whatever I need to do instead of requiring continuous TLC or figuring out why some piece of crap from snap doesn’t work anymore.

IsoKiero,

While war in Ukraine of course had some impact on things the story is a bit sensational. Our military budget was (or will be) increased something like 0.4% to meet 2% goal which I think has been a target at whole EU and gears were moving in that direction well before the war started. Significant amount of money, sure, but in perspective it’s nothing wild, just something we’ve been moving towards for years.

And, as the story told, we’ve had mandatory military training pretty much since independence at 1917 (there was couple of periods in between USSR took care of our exercise program, much like Russia is doing now in Ukraine). So for young men and (volunteering) women the exercises are just a normal Thursday for 6-12 months. I think it was last winter (or one before that) when our conscripts won at international winter challenges against some US troops and others from Norway/Sweden/etc.

Our grandfathers fought for this land and I’m pretty happy that we’re quite capable at keeping it. NATO doesn’t hurt of course and at previous wars we relied heavily on support from neighbors and friends, so things hasn’t changed too much at the basic level, they’ve just been refined ‘a bit’ for the last 100 years.

IsoKiero,

Does something like that show, or is it just another thing that needs to be done and whatever the ripples of that are, are not obvious?

Well, at least you always have something common to discuss about with people you meet and old jokes to repeat year after year. It doesn’t really show on day-to-day basis, but you can throw a bunch of finnish guys in a forest and come back the next day into a small settlement as everyone has at least some idea on how to survive in the wild and work as a team. Or you can give a gun to (almost) anyone and expect them to know how to use it safely (that’s not only because military service, we have a lot of guns in general, but it doesn’t hurt either).

Couple of decades ago especially leader training from the military had some kind of status, and with older people it still often has, but that’s not common enough to have any meaningul impact on anything. And on the other way, there’s few people who think that if man can’t complete conscription then there’s something wrong with him. That’s more common old the old people, but there’s not too many of them either.

So, it’s just another thing that needs to be done, but right now people of course see the need for it in very real life and that might have helped with the motivation. When I served it had been peace and quiet (in Europe and western world in general) for a long time and it was perhaps more common to think that time spent there was totally useless. Attitudes shifted maybe slightly when 911 happened (I was serving then), but it was of course a whole different matter than a full blown war, by our old enemy, in a nearby country.

IsoKiero,

You want a reverse proxy. But if nextcould is already reserving ports 80/443 you need a bit more configuration as it’s not possible for multiple processes to use the same port.

IsoKiero,

find /home/user -type f -perm /u+x -not -path “/home/user/Documents” -exec cp {} ~/Documents ;

Run it without exec -parameter to get a list of files affected, I’d guess that that will catch more than you want as it only checks that it’s a normal file and has the excecutable -bit on. To get only bash-scripts you’d first need to get a list of files with find and then check if it’s a script with something (grep or maybe file should work) and copy based on that result, but it shouldn’t be too difficult to write a script for it.

IsoKiero,

Above all else, it was kinda forced on us. Most of us were comfortable with sysv already.

And at least for me it solved a problem which didn’t exist. Sure, there’s some advantages, but when it rolled out it was a huge pain in the rear and caused various problems and made things more complicated for no apparent reason.

IsoKiero,

This one exists. SEPA or ISO20022. Encryption/signing isn’t included in the format, it’s managed on transfer layer, but that’s pretty much the standard every business around here works and many don’t even accept PDFs or other human-readable documents anymore if you want to get your money.

IsoKiero,

In Finland it kinda-sorta does, for some companies (mostly for things where you pay monthly). You can get your invoices directly to your banking account and even accept them automatically if you wish. And that doesn’t include anything else than invoices, so not exactly what you’re after. And I agree, that would be very nice.

Some companies, like one of our major grocery chain, offer to store your receipts on their online service, but I think that you can only get a copy of the receipt there and it’s not machine readable.

IsoKiero,

It doesn’t have any standardized extension. My solution uses .xml (as that’s the format internally), but it’s not anywhere in the standard. About category I don’t really know. SEPA stands for Single Euro Payment Area, but it contains quite a lot of things, www.iso20022.org/about-iso-20022 has a bit more info on the standard itself, but there’s no catchy category name either.

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