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Q&A

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

66%
+2 −0
How to append commands to startx from console

MWE startx &amp;&amp; xrandr-invert-colors Problem It seems that anything after startx does not get issued in the resulting X session. I'd like to make a bash function that sets up my monito...

2 answers  ·  posted 9d ago by young_souvlaki‭  ·  last activity 7d ago by celtschk‭

75%
+4 −0
Retrieve changes that closed a Debian bug

If a Debian bug number is referenced in the changelog of an uploaded package, it is automatically closed with a generic message: We believe that the bug you reported is fixed in the latest versi...

1 answer  ·  posted 2mo ago by Quasímodo‭  ·  last activity 18d ago by bgstack15‭

66%
+2 −0
Adding Python 3.11 to `$PATH`

Hi, I'm new here. So basically I builded Python 3.11 (https://python.org/) from source (from GitHub python/cpython branch "3.11"). So, here what I did : (obviously first I downloaded the repo as...

1 answer  ·  posted 25d ago by HGStyle‭  ·  last activity 25d ago by Canina‭

80%
+6 −0
What partition type should be used for cross-platform FAT partitions?

Question What partition type should I use for FAT partitions such that Linux and Windows systems both recognize the drive? Notes I am partitioning the drive with fdisk and making the filesystem ...

1 answer  ·  posted 1mo ago by young_souvlaki‭  ·  last activity 1mo ago by Ullallulloo‭

66%
+2 −0
How to install printer driver for Canon PIXMA TR4522 printer in Arch Linux

I have used printers before in Arch Linux, but I can't figure out how to print with a Canon PIXMA TR4522 printer. More specifically, I am having trouble finding the correct driver. I have installe...

1 answer  ·  posted 1y ago by Trevor‭  ·  edited 1mo ago by Trilarion‭

50%
+0 −0
Intel® Centrino® Advanced-N 6205 not found in Debian

I was installing Debian. But, I know that I have installed wireless connection system manually in Debian. are e needs non-free firmware files to operate. The firmware can be h as a USB stick o...

2 answers  ·  posted 1y ago by deleted user  ·  edited 1mo ago by Canina‭

66%
+2 −0
"A server is already running" error in rails

..$ rails s =&gt; Booting Puma =&gt; Rails 5.2.6 application starting in development =&gt; Run `rails server -h` for more startup options A server is already running. Check /home/istiak/ruby/q...

2 answers  ·  posted 1y ago by deleted user  ·  edited 1mo ago by Trilarion‭

60%
+1 −0
Preserve the sources extracted by dpkg-source so as to save time

It takes a long time to build even the source package for a PPA of a huge project, and while the build isn't finished my computer is under heavy load so I can barely navigate a browser. The frustra...

1 answer  ·  posted 2mo ago by Quasímodo‭  ·  last activity 2mo ago by Quasímodo‭

66%
+2 −0
When should you install windows dlls for wine with winetricks?

I noticed in winetricks that it can install windows dlls to the wine folder. It even gives an option to install almost all of them at once. When should someone install these instead of staying with...

0 answers  ·  posted 2mo ago by true_blue‭

80%
+6 −0
How do I deal with a "pending update to "snap-store" snap, close the app to avoid disruption" notification in Ubuntu 22.04?

For several days now, I've been getting a notification telling me that there's a pending update to the "snap-store", and to close the app to avoid disruption. I first got this notification while...

1 answer  ·  posted 2mo ago by Mithical‭  ·  last activity 2mo ago by Quasímodo‭

80%
+6 −0
Does /proc/config.gz always contain all supported options of a kernel?

Assuming I have a running Linux system that has the /proc/config.gz file: Does the (unpacked) file always contain all of the options the particular kernel supports, including commented out like: ...

1 answer  ·  posted 1y ago by sktpin‭  ·  edited 2mo ago by Quasímodo‭

80%
+6 −0
What are phased updates, and why does Ubuntu use them?

So I ran into that weird "packages being held back" problem while updating my system using apt. After some research, it appears to be the result of "phased updates". What are phased updates, any...

1 answer  ·  posted 2mo ago by ArrayBolt3‭  ·  last activity 2mo ago by ArrayBolt3‭

66%
+2 −0
Set compose key to Shift + AltGr

I have upgraded Xubuntu from 20.04 to 22.04 and my compose key, which defaulted to Shift + AltGr, was disabled. It is no longer available in the keyboard settings GUI either. How can I set the com...

1 answer  ·  posted 2mo ago by Quasímodo‭  ·  last activity 2mo ago by Quasímodo‭

71%
+3 −0
how to determine from the command line whether a DVD is encrypted

I am currently ripping a bunch of DVDs. Some are encrypted, and some are not. My method for ripping a DVD depends on whether or not it is encrypted, so I am looking for a command-line method to det...

0 answers  ·  posted 7mo ago by Trevor‭  ·  edited 2mo ago by Canina‭

dvd
60%
+1 −0
How to reduce DPI of external monitor using xrandr

Have I have the DPI on my laptop set in .Xresources with Xft.dpi: 192. I am outputting to the external monitor with: xrandr --output HDMI-2 --auto --rotate left --right-of eDP-1 Want I want ...

0 answers  ·  posted 3mo ago by young_souvlaki‭

60%
+1 −0
xrandr rotate not filling external monitor

Problem I can rotate output, but it does not fill screen. Instead it rotates in place so that the right side of the screen goes off the monitor. xrandr --output HDMI-2 --auto --mode 1920x1080 --...

1 answer  ·  posted 3mo ago by young_souvlaki‭  ·  last activity 3mo ago by young_souvlaki‭

60%
+1 −0
Who creates subdirs under `/run`?

A system daemon needs to create several files under /run/program-name/ (and possibly other subdirs of that). They are the PID file, and at least one Unix socket file (but maybe more). The FHS spe...

1 answer  ·  posted 3mo ago by alx‭  ·  edited 3mo ago by alx‭

37%
+1 −3
How to give password in shell script?

That's my Bash script: #!bin/sh cd qpixel sudo systemctl enable mysql mysql -u root -p rails s When it executes the line mysql -u root -p it will ask for password. To do so, I have tried...

1 answer  ·  posted 1y ago by deleted user  ·  edited 4mo ago by fedorqui‭

60%
+1 −0
Running `bashcompinit` in zsh to enable use of bash completion specifications gives "command not found"

I'd like to use the answers in this post while using zsh: compgen -c # will list all the commands you could run. compgen -a # will list all the aliases you could run. compgen -b # will list a...

0 answers  ·  posted 4mo ago by young_souvlaki‭  ·  edited 4mo ago by Canina‭

zsh
75%
+4 −0
How to get number of files in directory

How do you find out the number of files in a directory from the command line?

1 answer  ·  posted 4mo ago by young_souvlaki‭  ·  last activity 4mo ago by Canina‭

62%
+3 −1
How to edit file from less

MWE touch d less d # jump to editing d without leaving less Question Is there a way to edit a file from viewing it in less? Jumping straight into Vim would be preferred, but an answer for e...

1 answer  ·  posted 4mo ago by young_souvlaki‭  ·  last activity 4mo ago by celtschk‭

66%
+2 −0
How to make vi-mode bindings in terminal copy to clipboard

If I want to yank my last command I can UP yy, but this does not copy to the system clipboard. How do I configure my terminal to copy to the system clipboard so I can paste into other programs? ...

1 answer  ·  posted 4mo ago by young_souvlaki‭  ·  last activity 4mo ago by InfiniteDissent‭

66%
+2 −0
Bind brightness/volume and other special Fn keys in a tty

I am running Debian stretch on a Lenovo laptop with only a window manager (i.e. no desktop). Out of the box, this configuration of Debian ignores the keys with special Fn functions, such as volum...

1 answer  ·  posted 6mo ago by Quasímodo‭  ·  last activity 6mo ago by Quasímodo‭

81%
+7 −0
What does a minimal /etc/hosts need to contain?

I run an environment that, until recently, did all local name resolution by putting names in /etc/hosts. I'm in the process of replacing that with local DNS. The DNS part works fine, and now I'm tr...

1 answer  ·  posted 6mo ago by ajv‭  ·  last activity 6mo ago by dsr‭

75%
+4 −0
How do I safely replace brew on Big Sur?

I'm still trying to solve my problem with installing Ruby on a new Mac, and some discussions are saying that I need to reinstall brew because of the change from the old chipset to the M1. (I'm jus...

2 answers  ·  posted 12mo ago by Monica Cellio‭  ·  last activity 6mo ago by Monica Cellio‭

77%
+5 −0
Installing Ruby on MacOS 12.2 (or 11.6) produces compilation errors in the downloaded source; how do I fix?

A project I want to work on requires Ruby. I was directed to RVM or rbenv. I tried rbenv first because it has Mac instructions, ran into failures, uninstalled it and installed RVM, and still ran ...

1 answer  ·  posted 1y ago by Monica Cellio‭  ·  edited 6mo ago by Monica Cellio‭

77%
+5 −0
Capture separate _and_ combined stdout/stderr

Using BASH, how can I redirect stdout and stderr each, to two separate files, simultaneously? That's a mouthful, let me clarify a little: I have a hypothetical script that may/will generate outpu...

1 answer  ·  posted 7mo ago by jaybeers‭  ·  last activity 7mo ago by Quasímodo‭

50%
+0 −0
Dynamic IP & lease loss - "callback" mechanism?

I'm playing with NAT, and have a script now that, at startup of my little Linux machine, creates some DNAT rules, which take one incoming special port, and forward that to another interface with a ...

0 answers  ·  posted 7mo ago by CanisSomnolentus‭  ·  edited 7mo ago by CanisSomnolentus‭

50%
+0 −0
Automated wifi 'scavenging', daemon recommendation?

I have a RPi in the car that I need to act as a mobile AP. I need it to provide a consistent, unchanging ESSID (in AP mode) using the onboard wlan0 for all devices that stay in my car. Dashcams, t...

0 answers  ·  posted 8mo ago by re89j‭

80%
+6 −0
A shell script that can run under different shells

I have a shell script with a syntax compatible to both bash and zsh, except for a section that has zsh specific syntax that throws syntax errors if sourced from bash. Is there an easy way to escap...

2 answers  ·  posted 12mo ago by 4015.alt‭  ·  last activity 8mo ago by mjy‭

75%
+4 −0
Desktop Multiplexer for Linux? (GNU Screen for GUI apps)

GNU Screen and Tmux allow you to run command-line programs on a server, and 'disconnect' from them but let them keep running remotely. This is great if your primary computer is a laptop and it has...

1 answer  ·  posted 9mo ago by re89j‭  ·  edited 9mo ago by re89j‭

42%
+1 −2
sensors to histogram

I would want to... ... turn my sensors output into a live histogram. How to? Any available script already written? (✿◠‿◠)

1 answer  ·  posted 9mo ago by .                                                .‭  ·  edited 9mo ago by .                                                .‭

60%
+1 −0
Reducing Noise from yum-cron when repos are out of date

I have a few CentOS servers that I want to stay automatically up to date with yum-cron, and I want to get emails when there are problems but I do not want to get so many emails about repos being ou...

0 answers  ·  posted 9mo ago by re89j‭  ·  edited 9mo ago by Canina‭

80%
+6 −0
Why is Pause/Break key is immediately released? Can that be fixed?

Since the Pause key is useless, I tried to map it to a modifier key. What is straightforward for other keys turned out not to work fine for Pause. By inspecting the output of xev -event keyboard |...

1 answer  ·  posted 1y ago by Quasímodo‭  ·  last activity 9mo ago by Quasímodo‭

60%
+1 −0
How do I prevent remote syslog events from printing locally?

I have a GNU/Linux host that I use to aggregate syslog events from a few switches, printers, and generally less versatile hosts on my LAN. I set up rsyslog years ago to listen on UDP:514 and save ...

0 answers  ·  posted 10mo ago by re89j‭  ·  edited 9mo ago by CodeFarmer‭

66%
+2 −0
Scalable fonts are not loaded into the X server database

I have some old X11 applications complain that they cannot find a ISO8859-2 font. So I executed grep -r 8859-2 /usr/share/fonts/ and, to my surprise, found many matches, for example ==&gt; /us...

1 answer  ·  posted 10mo ago by Quasímodo‭  ·  last activity 10mo ago by Quasímodo‭

66%
+2 −0
VPN tunnel for outgoing connections but still allowing incoming bidirectional connections, using Wireguard or OpenVPN on Linux

For a particular use case, I need to be able to set up a Linux host (specifically Debian) to use a VPN tunnel for routing outgoing connections, but still allow incoming connections outside of that ...

0 answers  ·  posted 10mo ago by Canina‭

66%
+2 −0
Disable transient symbols for compose and dead keys in GTK programs

An article in the GTK blog explains the situation very well, but here is my go at it. In my keyboard layout, accents are handled as dead keys, so to insert "ë", first I type ¨ and then e. Nothing ...

1 answer  ·  posted 10mo ago by Quasímodo‭  ·  last activity 10mo ago by Quasímodo‭

71%
+3 −0
What does capital T mean in the output of 'ls -l'?

I had a nightly cronjob start throwing errors about "inappropriate permissions..." rsync: [generator] failed to set permissions on "/data2/home/redacted/alsoredacted/opt/dell/srvadmin/var/log/open...

2 answers  ·  posted 10mo ago by re89j‭  ·  last activity 10mo ago by Quasímodo‭

71%
+3 −0
Why is libvkd3d1 not upgrading on my system? (lubuntu 20.04 LTS)

Why is libvkd3d1 not upgrading on my system? (lubuntu 20.04 LTS) When I run sudo apt update, apt flags libvkd3d1 and libvkd3d1:i386 as upgradable, but sudo apt upgrade does nothing and reports tha...

1 answer  ·  posted 11mo ago by Darth_Muldoon‭  ·  last activity 11mo ago by Canina‭

66%
+2 −0
I deselected a package and changed my mind. How to select it without re-emerging?

I executed emerge --deselect xournalpp , which means "I don't need the xournalpp package anymore", so it can be removed by a future --depclean action in case Portage figures xournalpp is not a ...

1 answer  ·  posted 12mo ago by Quasímodo‭  ·  last activity 12mo ago by Quasímodo‭

66%
+2 −0
Quickly increase virtual console ("TTY") font size on the fly

I just want to "zoom in/out" in the text console, is there a straightforward command to do that? I have found various sources (1, 2, 3) that either suggest permanent changes (e.g. modifying config...

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

57%
+2 −1
Unpacking .zst files on Ubuntu

How one may unpack .zst archived on Ubuntu? I received .zst archive file and I am looking for a way to unpack it.

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

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

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