The Linux Questions Thread: a bunch of pitfalls, but technically it's possible

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Linux Questions Thread: a bunch of pitfalls, but technically it's possible

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AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Klyith posted:

Ublock is a better PC upgrade than a $1000 CPU.

This so much. I also had to switch to old reddit because the new site was destroying my 8c Ryzen with so much loving JavaScript that I was getting 3-4 word lag in typing.

Developers should have to test their apps on bog standard machines before release instead of saying ”well it works great on my 6c 9th-gen i9 w/32GB RAM, ship it". But that would require effort.

# ¿ Jan 21, 2023 20:59

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# ¿ May 10, 2024 20:55

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Computer viking posted:

It still doesn't handle something about deleting or overwriting right when connected to FreeBSD, so I keep putty around just to save me the frustration of trying to edit a line from history while the rendering on screen is a couple of characters off.

That's fair. I only ever connect to Linux, so it's worked perfectly for me for a while.

# ¿ Feb 28, 2023 22:17

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Developer probably pushed it with whatever their local config was, and probably had something installed in a nonstandard location with a hard coded path somewhere.

I hate software.

# ¿ Mar 9, 2023 01:21

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

jaegerx posted:

I broke 3 people because I use vi mode in zsh not emacs.

Yes kids, we still use vim.

I use vi mode in ksh on my AIX boxes.

But emacs? lol

We have a few devs that still use it because it has a couple of useful functions for the 4GL code they maintain, but otherwise, it's a ghost town.

# ¿ Mar 9, 2023 12:51

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I guess I never thought about it (or forgot about it) as emacs mode. It's the default for bash, which is everywhere, and that's how I've thought about it since the beginning.

# ¿ Mar 9, 2023 13:34

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

cruft posted:

I use emacs.

Found the beard grayer than mine.

Edit: or RMS has entered the chat 😂

# ¿ Mar 9, 2023 15:20

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Inertia is a helluva drug. I started out in vi, and I'll probably continue to use it until I'm done typing for my life. It's my default workflow and muscle memory, which I'm sure is true for most others with the shell/editor they cut their teeth on.

# ¿ Mar 9, 2023 15:31

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Pablo Bluth posted:

I use nano...

Heretic!

# ¿ Mar 9, 2023 15:36

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

One thing that does piss me off is that nano is the default editor in Ubuntu and it's really difficult to change. The cognitive dissonance created when I type visudo and get dumped into nano...

# ¿ Mar 9, 2023 15:43

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

cum jabbar posted:

Is that controlled by $VISUAL or $EDITOR?

That's the problem I ran into. I don't use Ubuntu much anyway, so the fact that it's now $VISUAL and not $EDITOR threw me.

See my previous statements about inertia, heh.

# ¿ Mar 9, 2023 15:46

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

cruft posted:

It's been $VISUAL since at least SunOS 4.2 (1982)...

If $VISUAL isn't set, it falls back to $EDITOR.

Why are there two? Well, in 1982, sometimes you logged in using one of these:

e: f, b AGAIN

`vi` started out as an extension to `ed` (or maybe `ex`, I don't recall). You'd pop into "visual mode" after starting, by typing `vi` at the `:` prompt.

Ha, so I'm not as old as I feel sometimes.

# ¿ Mar 9, 2023 16:27

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Sounds like your grep is failing. What's the line you're trying to run?

# ¿ Mar 19, 2023 22:24

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I use vi/vim because that's muscle memory.

# ¿ Apr 10, 2023 11:51

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

cruft posted:

I worked on a mainframe for a previous job where my job was getting it to where you could install Linux on it!

It was a real trip, working on the friggin' z13 batfridge.

Jealous
I could never sell my company on LinuxOne. Buying a mainframe (Z16 is about to launch) in 2023 sounds like such a crazy thing to do, but IBM keeps making them (and my Power systems) so I'll take it.

# ¿ Apr 14, 2023 04:21

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

VictualSquid posted:

Sounds cool. It looks like it will a few hours to download the init image though. Hope it works tomorrow.

Where did you find the moonreader apk? And did you get moonreader to sync positions with the regular android version?

Sometimes you hit a slow mirror. Canceling and trying again is recommended.

# ¿ May 1, 2023 20:20

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

VostokProgram posted:

I would simply not buy any expensive enterprise software

Laughs in AIX.

# ¿ Jun 23, 2023 02:55

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

NihilCredo posted:

Context: I want to run some web services that are a bit too heavyweight for my Raspberry Pi. I did some napkin math and figured that even purchasing the cheapest mini-server on the second-hand market would take 3-4 years to break even in costs, compared to simply running my gaming/coding desktop 24/7 and sucking up the electricity prices, which would also be more convenient in other ways (less stuff around the house, fewer devices to admin, better perf). So I'm now looking at how I can get it to idle as cheaply/quietly as possible.

Question: I have noticed that, by physically disconnecting the GPU from the turned-off monitor, the power draw at the wall goes down by 15-20W (compared to turning off the monitor but leaving the cable connected). Can this behaviour be toggled via a script? I.e. set/unset a flag that tells the GPU "pretend your cable is disconnected"? The GPU is an AMD RDNA3 model, if relevant.

What about a pi compute node? You can put fast storage on them, which alleviates a lot of storage workload/waits. I guess it depends on how close to the perf edge you're running.

# ¿ Jul 1, 2023 17:26

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

My R720xd with 24 spinners runs around 200W most of the time running my Plex server and a few VMs. A modern desktop PSU, especially SFF should be even lower than 50W even under a bit of load.

# ¿ Jul 1, 2023 19:34

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Maybe a legacy operation from the app when they created the snap?

# ¿ Jul 30, 2023 16:50

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

What model laptop is this? There's one from several years ago that used a notoriously bad WiFi chipset. Caused me a lot of pain dealing with my wife's IT department trying to shove it off on my network when literally every other device on the WiFi worked just fine.

# ¿ Aug 7, 2023 13:59

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

64 bit memory addressing is a curse. We never should have told developers about it.

# ¿ Aug 17, 2023 13:33

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Wasn't it something like 15 places that was enough to accurately estimate the circumference of the universe to a crazy precision?

# ¿ Aug 26, 2023 14:36

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Mr. Crow posted:

I don't know why I keep using ACL's they are absolute trash.

pre:

[my_user@truenas /mnt/main/root/documents/nextcloud]$ chown nextcloud data/
chown: data/: Operation not permitted
[my_user@truenas /mnt/main/root/documents/nextcloud]$ ls -ald data/
drwxrws---+ 3 my_user  local_documents  4 Jan 11  2023 data/
[my_user@truenas /mnt/main/root/documents/nextcloud]$ getfacl data/
# file: data/
# owner: my_user
# group: local_documents
            owner@:rwxpDdaARWcCos:fd----I:allow
            group@:rwxpDdaARWc--s:fd----I:allow
user:local_documents:rwxpDdaARWcCos:fd----I:allow
group:local_documents:rwxpDdaARWc--s:fd----I:allow
         everyone@:--------------:fd----I:allow

What the gently caress.

Any ideas?

chown is a superuser command, so either elevate to root or sudo it.

# ¿ Sep 18, 2023 00:38

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

waffle iron posted:

No it's not. You should be able to use chown on any file that is owned by your user or a group you're in.

I don't know of any current systems where that's true anymore. Find me one and I'll gladly add an exception to my post.

# ¿ Sep 18, 2023 02:07

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

NFS is not what we're talking about here. We're talking about unix file permissions and whether a non-elevated user can execute chown.

I just poked around on my RHEL 9 lab box. I suspected chown was in an sbin, but it's just in /usr/bin owned by root:root. The root group has execute permission, so for fun, I added my user to the group, logged off and back in and tried again. Linux chown is hardcoded to only allow execution by root.

And if you can change the ownership of files via NFS that's fine, because guess who is running the nfsd processes...

Edit: realized I was talking to a different person, ha. Pardon any snark there.

AlexDeGruven fucked around with this message at 03:53 on Sep 18, 2023

# ¿ Sep 18, 2023 03:47

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I'll have to double check, but I believe there's no extra perms. I'm guessing if you look at the source or run strings against the executable that execute alert is hardcoded.

Skepticism is good, but I was pretty confident on that one after 20+ years, heh.

Yup:

homeserv ~]$ ls -l `which chown`
-rwxr-xr-x. 1 root root 61448 Jan 6 2023 /usr/bin/chown

Maybe some ACL stuff deeper in, but I doubt it, personally. This is RHEL 9.2.

# ¿ Sep 18, 2023 23:10

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

Kibner posted:

I've heard lots of discussions about various *nix distros here, but almost nothing about openSUSE. Is there something particularly poor about that distro? I'm thinking about using it as my main WSL distro or when I want to use some *nix utilities on Windows.

It's just a low percentage platform overall. Red Hat owns the enterprise and Ubuntu reigns in desktop (but there's a lot of RH and Fedora there, as well).

At least in the US, SuSE getting bought by Novell pretty much cemented its niche where RH did everything else.

# ¿ Oct 10, 2023 21:08

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I love unbound. I use it to manage everything on my home network.

Quick and easy flat-file configuration for all the basic stuff I do, and plenty of configurability for more advanced needs.

# ¿ Oct 31, 2023 20:35

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

After 15+ years with AIX all I want is JFS2 for Linux, and then I would be happy.

# ¿ Nov 1, 2023 18:55

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I'm old enough to remember when that resin factory burned down in the early 90s and SIMMs were selling for over $100 per megabyte.

# ¿ Nov 4, 2023 11:45

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

atomicpile posted:

I tried KDE + Wayland + nvidia (4090) today. Works fine but computer is non-functional after waking up from sleep.

This concludes my semi-annual Wayland test. Nvidia Still Broken.

I have an older AMD card and Wayland under Fedora 38 will gently caress up waking from hibernate just about every time.

I still use it because Waydroid, though.

# ¿ Nov 6, 2023 02:17

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

poo poo, even some of our big iron boxes need occasional reboots.

The era of 2000 day uptimes has passed (even with live updates and patches).

# ¿ Nov 10, 2023 12:46

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

BlankSystemDaemon posted:

The use-case for live-patching is that POSTing most systems with an absolute fuckload of memory takes a long time, as memory context restore is usually turned off because it gets better system stability and re-training the memory takes forever.

Updating the rest of the system isn't an issue, at least for FreeBSD - because we have reboot -r which lets you reroot the filesystem to a new place by adjusting vfs.root.mountfrom (the kernel environment variable OID that gets set in /boot/loader.conf to indicate the root filesystem during boot).
Rebooting daemons shouldn't take a long time, and System500 should be capable of what daemon(8) can do.

But again, it's not really an issue - because a good infrastructure architect will have active-active or active-backup failover for the services that need uptimes high enough to justify live-patching, without risking all the issues I mentioned above.

EDIT: If memory serves, rerooting was added for doing readonly-netboot to NFS, but can be repurposed if FreeBSD ever gets live-patching.

AIX skirts a lot of this since Power5 through making everything under control of the hypervisor, even a single partition system is still an LPAR. The upshot of this is that a reboot of the OS skips all the memory and hardware checks, and you only need to do that kind of stuff now for system firmware updates, and even then only when you jump releases.

Sure beats the hell out of a Power4 reboot which took a minimum of 25 minutes before the handoff to the OS even with the bare minimum of RAM, etc.

# ¿ Nov 11, 2023 21:13

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I mean, any HPC platform in the last 20 years, and any AMD user in the threadripper era, really.

# ¿ Nov 16, 2023 23:55

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

spiritual bypass posted:

Hopefully we get some kernel mailing list reaction videos

That sentence made me physically ill.

# ¿ Nov 17, 2023 02:14

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

The Botanist is one of my absolute favorites.

It's not peated, though, if that's what is intriguing you. It's just lovely and floral.

# ¿ Nov 23, 2023 21:59

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# ¿ May 10, 2024 20:55

AlexDeGruven: Jun 29, 2007; Watch me pull my dongle out of this tiny box

I've yet to have decent experiences with resolved. It's especially bad for me on a laptop where things change quite often. I usually end up just disabling it after I fight with it for a few minutes.

# ¿ Nov 29, 2023 01:08

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Linux Questions Thread: a bunch of pitfalls, but technically it's possible

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