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Q&A

General Q&A about Linux and Unix-like operating systems

45%
+7 −9
Which Linux system to use?

Usually, many new users are confused when it comes to deciding which Linux to use. After trying out some distros, they don't know which one to use next. Which Linux is for beginners, intermediates ...

4 answers  ·  posted 1y ago by deleted user  ·  edited 1y ago by Matthias Braun‭

60%
+1 −0
How can you create a separate home partition using LVM?

I'm currently using Fedora 34 and want to install Fedora 35 while keeping around just my home folder. Currently I don't have a separate home partition, but I read online that it's easy to make one ...

1 answer  ·  posted 1y ago by true_blue‭  ·  edited 1y ago by true_blue‭

75%
+4 −0
Make Less use a normal view instead of hexdump view

Less does not display data files normally, but if it were some sort of Xxd. $ bash --norc $ export LESS= $ file -i /var/log/lastlog /var/log/lastlog: application/octet-stream; charset=binary $...

1 answer  ·  posted 1y ago by Quasímodo‭  ·  edited 1y ago by Quasímodo‭

71%
+3 −0
Close all desktop notifications

I'd like to hide/dismiss/remove all the notifications that applications like Signal have created. I know I can create notifications with, for example, notify-send -t 10000 "🤖 Here goes my message"...

1 answer  ·  posted 1y ago by Matthias Braun‭  ·  last activity 1y ago by Matthias Braun‭

84%
+9 −0
In a bash shell script, how to filter the command line argument list to unique entries only, for processing each?

I have a handful of shell scripts that accept any number of command line arguments, then do some relatively expensive processing based on each command line argument in turn. The general format for ...

3 answers  ·  posted 1y ago by Canina‭  ·  last activity 1y ago by Quasímodo‭

66%
+2 −0
Docking station block playing of audio on laptop

How can I manually set default audio device? I connected docking station and Lubuntu is somehow convinced that it can play audio. I want to continue using laptop speakers. Detaching docking stati...

1 answer  ·  posted 1y ago by Runaway_from_you_know_what‭  ·  last activity 1y ago by Runaway_from_you_know_what‭

33%
+1 −4
Substituting text in a sed like manner but with a richer format

I have the following problems working with sed: It doesn't allow multiline operations (thus, no indentations, no nesting) It is generally obligatory to wrap entire commands in quote marks (sed ...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by user53100‭

77%
+5 −0
How to figure out the licenses of files installed from packages?

On a Linux system, a lot of files are installed from packages, many of which have different licenses (and sometimes different licenses for different files in the package). If I want to figure out ...

1 answer  ·  posted 1y ago by celtschk‭  ·  last activity 1y ago by Quasímodo‭

25%
+0 −4
Is there possible way to change bit if my system is using 64 bit kernel?

Is it possible to change bit of a system? My system is using 64 bit kernel. I was trying to install chrome in my system. But, I couldn't since chrome doesn't support 32 bit. Since my system is usin...

1 answer  ·  posted 1y ago by Anonymous‭  ·  edited 1y ago by Anonymous‭

bit
28%
+0 −3
Why I can't update my system? (Kali Linux)

I had installed Kali Linux recently. I can't update or upgrade my system. Even, I can't install anything. Here's the error log apt update Get:1 http://kali.cs.nctu.edu.tw/kali kali-rolling InRele...

1 answer  ·  posted 1y ago by Anonymous‭  ·  last activity 1y ago by Anonymous‭

28%
+0 −3
Why can't I install google-chrome?

apt install google-chrome-stable_current_amd64.deb E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/...

1 answer  ·  posted 1y ago by Anonymous‭  ·  last activity 1y ago by Anonymous‭

66%
+2 −0
Can I make a compressed RAM drive and externally prepare a (pre-)compressed file to copy onto it?

I don't know what these things are called exactly in the Linux world. But there is the concept of a drive in RAM, to write files onto and read them like it was any disk drive. There is also the c...

0 answers  ·  posted 1y ago by CanisSomnolentus‭

60%
+1 −0
With a V4L2-compatible webcam, how to see its video feed for the purpose of adjusting aiming?

I have ordered (but am still waiting for it to arrive) a USB-connected webcam that is supposed to be V4L2 compatible. Once it arrives, I'm obviously going to want to mount it such that it provides...

1 answer  ·  posted 1y ago by Canina‭  ·  last activity 1y ago by Quasímodo‭

71%
+3 −0
Reverse shell with named pipe and netcat

This blog post describes a privilege escalation, exploiting tar's --checkpoint-action option. The privilege escalation is used to solve a TryHackMe challenge. The root user calls tar via cron whi...

0 answers  ·  posted 1y ago by Matthias Braun‭  ·  edited 1y ago by Matthias Braun‭

50%
+0 −0
Trying to print with CUPS from Chromebook through Debian box to USB printer

Hi everyone, First post! I'm trying to be able to print from a client machine over my lan to an older HP Laserjet 1012 connected via USB to a Debian box. It prints fine directly. I've gone thro...

0 answers  ·  posted 1y ago by kserwick‭  ·  edited 1y ago by kserwick‭

71%
+3 −0
How to detect if a Linux Docker host has had unwelcome guests?

I plan to set up a Raspberry Pi to host some dockerized apps, for it to be accessible to the Internet through a remote proxy, and since I'm no sysadmin, I'm trying to come up with a suitable policy...

1 answer  ·  posted 1y ago by nnlei‭  ·  last activity 1y ago by Canina‭

37%
+1 −3
Running several commands without && or ; or ()

I copy-paste several commands at once from a markdown editor (Typora) to Bash in a Putty window terminal; the file I work with reads as follows (empty lines included): $ non sed command 1 $ non s...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by Grove‭

60%
+1 −0
What are IUSE flags?

Every Gentoo user knows USE flags. Occasionally I stumble upon IUSE flags, for example, man emerge mention them in the description of an option: --newuse, -N ... USE flags may be toggled by yo...

1 answer  ·  posted 1y ago by Quasímodo‭  ·  edited 1y ago by Quasímodo‭

50%
+1 −1
Is it possible to install .deb file on arch-based Linux?

Is it possible to install .deb extension file in Arch-Based Linux? I saw there's no dpkg package. But, if installing .deb file possible than, how?

2 answers  ·  posted 1y ago by deleted user  ·  last activity 1y ago by Grove‭

66%
+2 −0
Access host device which bridges a connected device through same eth interface

I got 2 small computers running Linux. One acts as ethernet gadget, connected via USB to the other, the host. I set up a bridge, like so: ip link add name br0 type bridge ip link set dev br0 up...

1 answer  ·  posted 1y ago by sktpin‭  ·  last activity 1y ago by sktpin‭

50%
+0 −0
Ruby installation in Manjaro (Arch-Based Linux)

I was reading the documentation. In Debian based Linux, I have to install build-essential, libssl-dev. But, what about Arch-Based Linux? I had tried sudo pacman -Syy build-essential libssl-dev ...

2 answers  ·  posted 1y ago by deleted user  ·  last activity 1y ago by Anonymous‭

71%
+3 −0
What does `emerge --update --newuse --deep @world` have to do with package removal?

In Debian-based distributions, one can update the system with apt upgrade and cleanup unused dependencies with apt autoremove. Period. On Gentoo that is apparently not as straightforward. From G...

0 answers  ·  posted 1y ago by Quasímodo‭  ·  edited 1y ago by Quasímodo‭

71%
+3 −0
How to use a detected USB RNDIS gadget as network adapter

I have a RaspberyPi module, with USB connected to another module computer (as USB host) running Linux. The RasPi is configured as USB ethernet gadget. Once I boot the RasPi, and enter dmesg on th...

1 answer  ·  posted 1y ago by sktpin‭  ·  last activity 1y ago by sktpin‭

71%
+3 −0
Get current server of pacman

How do I get the URL of the remote repository that pacman uses to download packages? I know that I can tell pacman which server to use by editing /etc/pacman.d/mirrorlist. But in my case, all of t...

1 answer  ·  posted 1y ago by Matthias Braun‭  ·  edited 1y ago by Matthias Braun‭

50%
+0 −0
USB host: any special kernel option(s) needed to detect Gadget devices?

I have a custom, ARM Cortex A53 based Linux system, based on Buildroot one RaspberryPi CM3 module, connected to the other system via USB The USB gadget is correctly set up on the CM3 module ...

0 answers  ·  posted 1y ago by sktpin‭

40%
+0 −1
Why I can't use dark theme in Manjaro?

I was using Chrome for a moment in Manjaro. My theme was Adwaita dark which I chose from Tweaks. Suddenly, I noticed my theme was changed for no reason. I had updated my system 4-5 hours ago. When ...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

22%
+0 −5
Is it possible to write more than 1 equation in LO Math? [closed]

I was using Libre Office Math. I thought I can write multiple equations in LO Math. But, I noticed I can't write more than one equation. I was trying to write multi-line. Unfortunately, I couldn't....

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

60%
+1 −0
Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'

I have installed mysql-server on Ubuntu 20.04 then I tried to sign into mysql-server using sudo mysql -u root but I have got Error: Can't connect to local MySQL server through socket '/var/run/mys...

2 answers  ·  posted 1y ago by Kevin M. Mansour‭  ·  last activity 1y ago by Kevin M. Mansour‭

66%
+2 −0
Your Ruby version is 2.7.0, but your Gemfile specified 2.6.6.

In my Ruby project, when I try bundle install, I got: Your Ruby version is 2.7.0, but your Gemfile specified 2.6.6 I don't know how to solve it. I am using Windows Subsystem for Linux (WSL) U...

2 answers  ·  posted 1y ago by Kevin M. Mansour‭  ·  edited 1y ago by deleted user

50%
+0 −0
How can I access Manjaro without any error? (I had installed two grub-loader)

I was using Manjaro. And, I had Windows alongside Manjaro. I have installed Debian without "removing" any OS (I had removed Prime OS). And, I was using grub-loader of Manjaro earlier (Manjaro's gru...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

75%
+4 −0
How to forward SSH access of one machine, through another, to the rest of a network?

I have a setup with two Raspberry PIs, a CM3 module with only a USB connection to the outside, and the Pi4 with a lot of connectors. I set up things such that CM3 functions as USB Gadget, and once...

2 answers  ·  posted 1y ago by CanisSomnolentus‭  ·  last activity 1y ago by Grove‭

71%
+3 −0
Why does the file command fail to recognize non-text files as such?

POSIX defines Text file as A file that contains characters organized into zero or more lines. The lines do not contain NUL characters and none can exceed {LINE_MAX} bytes in length, inclu...

2 answers  ·  posted 1y ago by Quasímodo‭  ·  last activity 1y ago by LawrenceC‭

22%
+0 −5
Do shells have anything to do with port forwarding or port triggering?

I find port forwarding and port triggering as advanced sub-topics of the topic of network protocols which include the "port" concept such as TCP and UDP. I am wondering if shells in general and Ba...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by LawrenceC‭

50%
+0 −0
unable to access Manjaro (kernel file not found)

I have Prime OS and Windows 10 alongside Linux Manjaro. I was using Prime OS nearly 2 hours. Then, I turned off my laptop for 30-60 minutes. Then, I turned my laptop on and I was using Windows 10 f...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

50%
+0 −0
printer installation in Linux

I had write some texts in LibreOffice Writer. Now, I want to print them to pages. For that reason, we use "printer". My printer's name is HP laserJet P1007. In Windows, I can simply download from h...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

50%
+0 −0
Grub rescue error

I was using Linux mint and Windows 10 together (in different partitions). Few months I was using it freely. Today I got a message in Windows 10 (new updates available or shutdown and update) then, ...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

66%
+2 −0
grub loader can't detect Bliss OS | Shell

While this is about grub loader, this is likely to be a question of OS related. If it doesn't belong to this site than I will remove it. I had installed Bliss in sda2. Device Boot Start...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

72%
+6 −1
How do I get lubuntu to not prompt non-admins about updates?

I have an old Mac Mini (Late 2009 model) kicking around, and as Apple stopped providing patches for it (and as I'm not going to put an unpatched system on the Internet), I was looking for a Linux d...

1 answer  ·  posted 1y ago by Peter Cooper Jr.‭  ·  last activity 1y ago by deleted user

71%
+3 −0
Is this a robust way to distinguish explicitly installed packages from those pulled in as dependencies?

When exploring the commands from this answer to my previous question, I found that the ist of packages includes a lot that were automatically installed due to dependencies. Obviously I'm interested...

1 answer  ·  posted 1y ago by celtschk‭  ·  last activity 1y ago by Peter Taylor‭

75%
+4 −0
What is the best way to identify changes from the default configuration in Raspbian systems?

I've got a Raspberry Pi running Raspbian, which I'd like to reinstall from scratch. However over time I've made many changes to the configuration (installed new packages, changed the name of the de...

1 answer  ·  posted 1y ago by celtschk‭  ·  last activity 1y ago by Canina‭

60%
+1 −0
How to use Avro in Linux?

I am using Manjaro(Arch-based Linux). And, I had installed Avro using the following command by getting help of the documentation yay -S ibus-avro-git Avro is software using that software user w...

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

71%
+3 −0
How to configure GNOME Keyring to by default NOT automatically unlock keyrings whenever logged in, on Debian?

On a Debian Buster system I use, the password for connecting to a VPN is stored in the GNOME Keyring. Therefore, whenever I want to connect to the VPN in question, I get prompted to unlock my keyri...

1 answer  ·  posted 1y ago by Canina‭  ·  edited 1y ago by deleted user

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