@nirogu@vivaldi.net

Computer scientist and mathematician

This profile is from a federated server and may be incomplete. Browse more on the original instance.

nirogu,
@nirogu@vivaldi.net avatar

Although the most active instance by far is pixelfed.social, that shouldn't be relevant as you can interact with any pixelfed or mastodon account/posts no matter the server you join. So, you could join any pixelfed instance and follow the mastodon.art (most active multimedia instance) users, for example

nirogu,
@nirogu@vivaldi.net avatar

As far as I know, no. But you can from mastodon, pleroma, or other similar microblogging oriented software

nirogu, to linux
@nirogu@vivaldi.net avatar

Run command as not-root

Hi everyone

At work, I have to run a command in an AWS instance. In that particular instance only exists the root user. The command should not be executed with root privileges (it executes mpirun, which is not recommended to run as sudo or the machine might break), so I was wondering if there is a way to block or disable the sudo privileges while the command is running. As mentioned, the only user existing there is root, so I suppose "sudo -u" is not an option.

Does anyone know how to do it? Thanks in advance!

@linux

nirogu,
@nirogu@vivaldi.net avatar

@astray yeah, that could be an option, but if more users exist in that machine then other processes might fail as that instance is part of a bigger cluster that has several processes running. It might not be a big deal, but checking that may still need some work. I'd prefer a way to do it without creating new users, if it exists

nirogu,
@nirogu@vivaldi.net avatar

Forgot to mention that creating a new user brings a lot of problems because of how that machine is configured and all the tools that would need to be added the new user's permission. In theory it would eventually work after some time working on it, but I'd like to know if there's a way to do it without creating users (or if it's impossible, so I can just go on with that only option)
@linux

nirogu,
@nirogu@vivaldi.net avatar

@Rustmilian yeah, already tried it. The problem is that all of the apps in the instance are only installed for the root user (e.g. python and all it's libraries. So, when I use su -c all I get is a lot of command not found messages that would take a lot to solve. Besides I expect a lot more problems when the command needs access to some files and some processes (like a sql database) that would require me to do a lot of stuff to grant permissions to the new user. That would eventually work but given the work it requires I thought that some kind of "anti sudo" command or something like that could exist so I can still be the root user but pretend I am not a superadmin

nirogu,
@nirogu@vivaldi.net avatar

@Oisteink in another comment (https://social.vivaldi.net/users/nirogu/statuses/111342629815373353) I explained why I'd prefer not to create another user, as it would require a lot of work to configure everything again for that command to work (it's a big process). I was thinking of hiding my sudo permissions from the program or something like that, if possible, because many things in the instance are only configured to be used with the root user, even if they don't require sudo. Anyway, I'm seeing that it might not be possible so creating a new user could be the only option 🙁

nirogu,
@nirogu@vivaldi.net avatar

@astraeus yep, completely agree on the security issues, that is a mistake that should be fixed. But for the moment I confirmed that root is the only user, and every file and program in the instance can only be used by root (I just created a new user and tried to run the command with su -c but got a lot of permission denials and command not found)
If I could hide or disable my own sudo permissions that would save me a lot of work, but I'm starting to think that something like that doesn't exist 🙁

nirogu,
@nirogu@vivaldi.net avatar

@Oisteink yep, that seems the right thing to do. Honestly, most of the real problem was lazyness to reconfigure everything, and that's why I published the question. But now I'm convinced that that's the only way lol
Thanks for the help!

nirogu,
@nirogu@vivaldi.net avatar

@ursakhiin honestly, didn't consider it. Just checked and the "docker" command doesn't even exist so I assume that is not the case. Do you know if the is any other way I can be certain?

nirogu,
@nirogu@vivaldi.net avatar

@ursakhiin honestly, I didn't even know an aws instance could be a docker image. Everything I did was creating the instance normally so I assumed it was just a regular vm. But already double checked and it is not a docker image, so no problem there 🙂

nirogu,
@nirogu@vivaldi.net avatar

@elscallr I agree about the instance configuration, fixing that is the real solution
My question was not about running something as another user, but about hiding the superadmin privileges from a single command I'd execute without switching users. However it is clear that something like that doesn't exist so I'll do the right thing and set everything to work with a new user

nirogu,
@nirogu@vivaldi.net avatar

Great news. Seems that most of the community uses KDE anyway, so this should make things faster for most installations

nirogu, to linux
@nirogu@vivaldi.net avatar

Problem with WiFi driver in arch linux

Hi everyone

I've been trying to solve a problem with my arch (endeavour) instalation and wanted to know if anyone here can help

Everything is working well, excepting the WiFi connection. It is extremely slow, sometimes disconnecting from the network, and in the task bar, the WiFi icon shows that the signal strength is weak, although the router is in the same room. Switching between r8168 and r8169 as recommended doesnt work. Any ideas?

@linux

nirogu,
@nirogu@vivaldi.net avatar

01:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:200f]

nirogu,
@nirogu@vivaldi.net avatar

I might do that if nothing else works, but it'd be really weird if there is not a simple native linux solution, I'm just not an expert lol

nirogu,
@nirogu@vivaldi.net avatar

@knobbysideup @linux Yep, it is disabled

nirogu,
@nirogu@vivaldi.net avatar

@driving_crooner @linux Just did it, but no change at all. I think that would be the solution if the card weren't recognized, but the issue here is that it connects but erroneously reports weak wifi signal

nirogu,
@nirogu@vivaldi.net avatar

@Link @linux Yeah, I'm thinking that that could be the way. I've already had a lot of progress maintaining the connection by configuring iwlwifi but it is still way slower than it should

nirogu,
@nirogu@vivaldi.net avatar

@Kalcifer @linux
[ 5.010372] iwlwifi 0000:01:00.0: enabling device (0000 -> 0002)
[ 5.108148] iwlwifi 0000:01:00.0: Detected crf-id 0xbadcafe, cnv-id 0x10 wfpm id 0x80000000
[ 5.108171] iwlwifi 0000:01:00.0: PCI dev 24fd/0110, rev=0x230, rfid=0xd55555d5
[ 5.137796] iwlwifi 0000:01:00.0: loaded firmware version 36.ca7b901d.0 8265-36.ucode op_mode iwlmvm
[ 5.556122] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
[ 5.614915] iwlwifi 0000:01:00.0: base HW address: 60:f6:77:eb:1e:6e, OTP minor version: 0x0
[ 5.689840] iwlwifi 0000:01:00.0: iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter
[ 13.355547] iwlwifi 0000:01:00.0: Registered PHC clock: iwlwifi-PTP, with index: 0

nirogu,
@nirogu@vivaldi.net avatar

@Link @linux Yeah the kernel changes nothing, I might have to change to intel because I dont know what else to do at software level
About the @ , I'm using my mastodon account to write all these posts and they are added automatically. Besides thats the best way for the posts I write in mastodon to appear as comments in lemmy clients. If they look weird to you it might be activitypub compatibility bugs but nothing too important :)

nirogu,
@nirogu@vivaldi.net avatar

@Link @linux Yep, writing from Tusky right now. The fediverse is great :)

  • All
  • Subscribed
  • Moderated
  • Favorites
  • Food
  • random
  • uselessserver093
  • aaaaaaacccccccce
  • test
  • CafeMeta
  • testmag
  • MUD
  • RhythmGameZone
  • RSS
  • dabs
  • feritale
  • KamenRider
  • SuperSentai
  • oklahoma
  • TheResearchGuardian
  • All magazines