900mb cdr with xfburn

hi, do you know if it is possible to create a 900mb cdr? in xfburn there is the 900mb option and it is possible to buy 900mb cds. some people were saying that this cd won't play in a car stereo it will skip tracks, because of overburning. do you know if this setup will work good or bad?

https://redd.it/moq3yf
@r_linux

I wrote a network manager in shell.. kind of

Basically the noscript. Ever since I started using arch linux (btw), I've been trying to continually shrink my footprint on my laptop. And network managers are kind of bloatware. All you need to run this is wpa_supplicant and dhcpcd.

# What it is

It's a shell noscript that does the annoying wpa_supplicant sh!t. You know, like having to specify minimal configuration every time you want to scan. Or having the kill the process whenever you want to switch networks. Having to write a whole line of shell whenever you want to connect to a network yadda yadda I'm sick of it. So I made this :)

# Functionality

Right now, it has two primary functions and one sub-function.

The first is the scan function. Pretty self explanatory. Except here you don't have to manually set a configuration file, exec scan, and then exec scan_results. You just exec # device scan.

​

# device scan

The second is the connect function. Again, self explanatory; It allows you to connect to networks. Right now, it might only work for WPA but public networks might work as well.. but that's not all my friends. YOU CAN [easily\] SAVE A PROFILE. The nomenclature is # device connect [ssid\] [passwd\] and if you want to save it, you just add save to the end like so # device connect [ssid\] [passwd\] save [name\]. The name is optional and if it stays unset, the config file will be named after the ssid.

​

# device connect \[ssid\ [passwd\]](https://preview.redd.it/jaegv7c0kjs61.png?width=1920&format=png&auto=webp&s=caa8353f7793b1bd635d061ea1f1d8ecbdef8f96)

​

# device connect \[ssid\ [passwd\] save [filename\]](https://preview.redd.it/ru95f6gcjjs61.png?width=1920&format=png&auto=webp&s=68ccbbc2851489765c0db9a6f5abce090223195e)

Lastly (for now), but certainly not least is the -s flag for the scan function...

## Are you tired of having to reconnect to a network that you've been on? Yes you're too lazy to make a configuration file and now you have to ask for the password (and probably ssid) again. Well I was. And so was my girlfriend. Introducing... -s (search)

​

# device scan -s

Stick that bad boy at the end of scan like so # device scan -s and it will parse through your wpa_supplicant config files and test if any of them match up with currently available networks...

and then it asks you if you want to connect.

You can also just say "n" and it will continue parsing until you've denied every recognized config or accept one.

# Compatibility

You need the coreutils, wpa_supplicant, and dhcpcd. It may or may not work on dmenu. If it works, the scan will be pointless. But it would be cool to connect to a network.

# Shortcomings

I would imagine a lot of things. This small step basically covers my daily network needs. But I don't manage any servers or know anything about networking. The code is also not looking suuuuupppeeerrr hot since I've been up two nights in a row working on it. Also, it has to be run in root as of right now.

In terms of what happens if you f up your nomenclature... idk. It will probably just return some wpa_supplicant errors. But yeah the whole root thing is not ideal.

# Future plans

Probably configuring ip is at the top of the list. I want to be able to specify and interface. In the future, I may just grep it from ip by default. Also, more wpa_cli functionality. Additionally, I need to figure out the alias commands in wpa_cli. I may do my bluetooth in the same .sh.

# Final thoughts

I'm at the end thinking what if everyone has a bunch of shell noscripts and I'm just another brick in the wall. But I just thought it was cool. I hope you guys do to. If anyone likes it, I can definitely post a more revised version of the noscript. Have a goo

day.

https://redd.it/moqrgt
@r_linux

Get currently playing youtube video from chrome

Hi,

I've always liked the 'look' of people that have their currently playing music from mpd or whatever on their bars. Unfortunately, I don't often listen to music while working, I'm usually playing a youtube video in chrome. I think it'd be pretty neat to be able to get the noscript of the currently playing audio out of chrome some how.

There is this new global media controls feature now, but there doesn't seem to be a way to hook into it in any way.

Anyone know of any way to pull this off or have any ideas? The only thing I can think of is either scraping it out of the noscript of the x11 window itself, or pulling off some high-level jank with a chrome extension writing the noscript of the last played to a file. I'm not sure it's very feasible to write to a tmp file from a chrome extension though.

The other off the wall idea I had was a chrome extension that would actually make an http call to a server you control (or one running on localhost? but I think chrome extensions are heavily sandboxed to prevent you from doing that) that could then write the video noscript to a tmp file.

https://redd.it/mosztp
@r_linux

open all ports for IP in firewalld

can someone help me please I wanna open all port to a privet ip ( 192.168.11.20 ) in firewalld.

I tried to create rich rule like this

firewall-cmd --permanent --add-rich-rule=' rule family="ipv4" source address="192.168.11.20" port protocol="tcp" port="" accept'

but I'm getting this error

Error: INVALID_PORT:

https://redd.it/movx67
@r_linux

Suggest me a package manager

In my work i need to have multiple versions of packages and i want an easy way to have project specific shells that take care of linking the correct stuff i need, I know that nix and guix can do this but i am looking for a way to get this functionality with any distro's built in package manager, My dream is basically big package repository with a package manager that is able to install and manage multiple versions of the same package + nix like shell functionality to ease switching between projects.

Note: i don't like using containers for this as i find them pretty wasteful (disk wise) and unfit for that usecase

Note2: I know that nix is pretty much what i described and i have been using nixos for quite a while, i switched to regular linux and i don't like having multiple package managers hence the question hoping that their might be something similar out there that i can't find.

https://redd.it/mowa6k
@r_linux

Any headsets where are can hear my own mic?

Been using razer headset for a while and like being able to hear my own mic as i'm not fan complete silence but I hate having to install third-party software.

does any one know a headset that's just plug and play?

https://redd.it/moy5fl
@r_linux

Linux command deep dive

I kind of want to understand Kernel and how user interacts with it in detail. Recently had an interview where I was asked what happens from the moment you type “vmstat” to the moment you get all the stats back. (I am a web dev and I just use Linux on day to day basis, was asked this because they wanted to test how much of system admin am I 😅)
Now I know what vmstat does, and I have always treated Linux as an OS, not really caring what goes on in background. But this piqued my interest. How would I go about learning this ? Couldn’t find any good resource that can explain the whole workflow! Any ideas ??

https://redd.it/moyxux
@r_linux

A good linux and open source related channel I found.
https://youtube.com/c/MentalOutlaw

https://redd.it/moyym7
@r_linux

Xanmod vs Liquorix

I always use Liquorix. But now I'm kinda thinking if xanmod or liquorix is better. Some benchmarks say it Liquorix some say thats Xanmod. I would want to know which one is the fastest/most secure.

​

I'm kinda new to Linux. But I'm creaving for knowledge. Thanks everyone for reading/answering.

https://redd.it/mozk9g
@r_linux

starting a native adaptive Linux client for Signal

Please do not respond with criticisms of Signal. I am trying to get something done here, not start a debate.

I just ordered a PinePhone and the biggest obstacle for me to use it as my daily driver to replace Android will be having a Signal client. I've been following the issue of getting Signal working on Linux smartphones for a while and I've come to the conclusion that it is probably best if we start a new client application. The Signal developers are uninterested in making their clients work for our use case. The Signal "Desktop" (Electron) client does not and will not support registering an account, is not designed for small screens, and does not build on ARM. The latter two issues may be fixed upstream (eventually), but they've specifically said they do not want to make the Electron client have feature parity with the Android and iOS clients. I doubt using the Android client in Anbox would be a good long term solution for battery or RAM usage.

So I think we need a native Linux client. I do not think Axolotl is a viable long term solution because it uses its own implementation of the Signal network protocol (written in Go). Reimplementing the cryptography and network protocol is a ton of work and will continue to be a ton of work as upstream adds more features. Axolotl has only just started reimplementing the new Signal groups protocol which was introduced 5 months ago. Also, the security of a reimplementation is dubious. Whisperfish is a nonstarter because it uses the proprietary QML libraries from Jolla. It is also using the unmaintained libsignal-protocol-c library, but the developers plan to switch to the new upstream Rust libraries.

Fortunately, the Signal developers are now using a new Rust library with bindings to C, Java, Swift, and TypeScript for their own clients. Currently this is undocumented and does not yet implement all the logic necessary to write a complete client. However, upstream has advised that using this new library would be the best option for starting a new client.

There are several paths forward:

1. A new application with the GTK Rust bindings. This would have the advantage of not needing any intermediate layers between the upstream libraries and the client application.
2. A new application with Qt and Kirigami. I discussed this idea with the Plasma Mobile developers and they suggested it could work by making a QObject wrapper class around the Rust libraries using cxx, run that in its own thread to handle the networking, and use Qt signals & slots to communicate with QAbstractItemModels backing the QML.
3. Integrate the Rust Signal libraries with an existing chat application instead of writing a whole new GUI. Integrating into Chatty would have the advantage of also handling SMS & MMS like the Signal Android client, but I'm unclear how audio and video calls could be integrated into Chatty. Maybe that could be separately integrated into Calls. Integrating Signal into Fractal or NeoChat could be other approaches, but would make those applications much more complex and I'm not sure their developers would welcome that.

I am leaning towards using QML and cxx because I'll be able to reuse those skills for my main project. That's an old QWidgets application that we're planning on rewriting with QML and have discussed integrating Rust libraries. The thought of using C to add Signal support to Chatty is unappealing to me. I have no

experience developing with GTK, so that would add a lot of work to this project for me. Ultimately, which technical path to choose will be up to whoever does the work.

For push notifications, I think we should implement a native Linux daemon for Firebase Cloud Messaging without Android. This would require no extra effort for the Signal Foundation. It could also be used for reimplementations of other Android chat applications such as WhatsApp, Facebook Messenger, Slack, Zulip, and more. microG has already reimplemented the Android API in Kotlin so studying that code could be helpful.

If someone wants to make this client work on Windows and macOS, notifications could be done with WebSocket. But I'm far more interested in getting it working on Linux smartphones.

I don't really have the capacity to lead this long term, so right now I am trying to organize people who are interested in doing the work. Hopefully once there is a minimal proof-of-concept that can register an account and send & receive text messages, more developers will join.

I've also started a discussions on the Pine64 and Signal forums about this.

https://redd.it/mp2j0j
@r_linux

Can I flash iso without downloading file?

Is there a way to make a bootable usb piping axel downloader to dd command as in (flash iso directly from link) I have little space , is there a way? I don't care if it takes time but if there's a way , maybe download and compress at same time?

TL:DR : Can I Flash iso without downloading?

https://redd.it/mp3s03
@r_linux

Reflections on One Year as the CEO of Mozilla – The Mozilla Blog
https://blog.mozilla.org/blog/2021/04/08/reflections-on-one-year-as-the-ceo-of-mozilla/

https://redd.it/mp4ban
@r_linux

Thoughts on dealing with kernel panics
https://distrowatch.com/weekly.php?issue=20210412#qa

https://redd.it/mp2qse
@r_linux

Firefox usage is down 85% despite Mozilla's top exec pay going up 400%
https://calpaterson.com/mozilla.html

https://redd.it/mp5zjy
@r_linux

Does that linux kernel internally use multiple threads ?

In kernelspace, does does linux kernel execute instructions in a sequential way, or there are cases in which the kernel itself will be processing multiple instructions internally ? Does the kernel internally spawn multiple threads for some tasks ?

https://redd.it/mp7cgi
@r_linux

how long have you used Linux?
https://www.reddit.com/r/Linuxadministrators/comments/mp6mwv/how_long_have_you_used_linux/

https://redd.it/mp6nnr
@r_linux

Is it worth going through version 2.6 of the kernel?

I recently got the book Understanding the Linux Kernel 3rd edition. I noticed that the book goes through Linux 2.6, so I’m wondering before diving into 800 pages if it’s worth going through this version or if I should get more up to date material.

If you think I should go over more recent material, any recommendations?

https://redd.it/mp25zb
@r_linux

I'm teaching Linux Command line fundamentals for free

I teach about command line and linux in general on discord anyone interested can pm me to get the discord link. Apart from this on the discord I post resources, and you can ask anything related and meet people also interested in computer science in general. I am looking for mentors and teachers as well so anyone willing to teach can also join!

https://redd.it/mp9vzz
@r_linux

What is the best kid friendly distro for kid ?

I don't have anything for my sister birth day. So i decide to pack a present with my old laptop that are still function with xubuntu pre install But my sister is 10 year old she don't know anything about linux.

Should i just leave the laptop with xubuntu pre install or there other better option ?

https://redd.it/mpavdw
@r_linux