Questions tagged [linux]

A family of Unix-like operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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Binding of DNS Servers to Interfaces

I am deliberately leaving my platform unspecified for this question, though I will say that my "platforms of interest" are Linux and Windows 10. Suppose I have N NICs. Each is connected to ...
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interaction between WSL (i.e. ubuntu on Windows) and ffmpeg [closed]

I'm considering migrating some FFMPEG workflows to the Windows Subsystem for Linux (WSL2), but it's a nontrivial amount of work so I wanted to see if anyone has experience here, specifically whether ...
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L2TP VPN connection is failed after reseting the BIOS on Ubuntu 18.04.5 LTS

During the L2TP VPN connection, I get the following error Activation of network connection failed. All credentials are valid since I can connect to the VPN using the Windows machine. The connecting ...
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How to restore a dd partition image in a VDI having an empty MBR and a partition

I have a dd image of a partition that was /dev/sda1 on the original disk. I need to create a VirtualBox machine out of it, on a VDI that should contain one partition /dev/sda1, and a MBR where to ...
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firefox certificate store and set using terminal - linux

im trying to find a way to set my firefox certificate options via cmd line. i need to set automatic selection of an x509 certificate via command line, i'm working with selenium. Or are there other ...
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Converting an add-rule to a service for firewalld

I am hoping to get some help. I am new to firewalld and from what I was reading it is preferred to use a service or a rich-rule over an add-rule. I personally would prefer to set it up as a service, ...
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Open unity application via command line wih application's graphics off

On Unity documentation we can see there is a way to run a standalone player via command line without the graphics by typing -nographics I'm using the following command on a mac terminal, but it is ...
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2answers
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Prevent USB device usage on linux

Is there a way in Linux to prevent usage of USB devices such as USB drives, Bluetooth Dongles etc.? I prefer something like black / white listing. In some cases I have access to specific devices which ...
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How to debug a nonfunctioning external SSD drive

Wanting to replace the aging SSD in my laptop, I bought a new one (Western Digital WD_Black SN750) along with an external USB case (a simple Lenovo M.2 SSD case). Putting the drive into the case and ...
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Gnome-builder: compile a Java program [migrated]

I'm on Debian 10. I have installed Java (openjdk-11). How can I compile this simple java program within Gnome Builder? (The Run button is "grey" and not clickable; i.e. Builder doesn't seem ...
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Some hard drives not detected when starting or restarting a computer

I have a dual boot of Manjaro and Windows 10. Each OS is on its own hard disk and my default hard disk too boot from is the one with Manjaro. There is strange behaviour when I want to log on to my ...
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sometimes, dhclient is needed first before setting static ip to gain network access in Debian bullseye

Running Debian testing with static ip set by systemd-networkd. The Address and Gateway settings in the *.network files are correct since network connection can be established using those ...
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Run a command on startup of a server

I want to have a command run when I boot/reboot a server. I found the same solution everywhere, which is to make a .desktop file in ~/.config/startup/. But it did not work. I tried copying the ....
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“hostname: command not found” CentOS 8

On CentOS 8 the hostname command was removed. With seemingly no way to get it back. No documented way at least Duckduckgo tells me. The problem with this approach is that the whole world expects the ...
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Kali linux keyboard led not turning on after installing gnome

I have one of those keyboards that has its "scroll lock" key as its led backlight switch. I used to turn on my keyboard with the command "xset led". but then i decided to install ...
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Do any linux systems depend on at (atd) for system functionality? I want to disable it

I have a cubieboard (an SBC, like a raspberry pi) that I'm using in an embedded application. While testing a box before shipping I noted unacceptable lag in the user interface. Investigation turned ...
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File permissions - read and access only for one user

Description: Debian GNU/Linux 9.11 (stretch) Release: 9.11 Codename: stretch Is it possible to deny read and access permissions to all users except myself and another specific user without ...
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1answer
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systemd-logind ProtectHostname=yes prevents seat creation when using NIS in LXDE

systemd version 246 Debian Bullseye Kernel 5.9.0-1-amd64 I don't exaclty know when this was introduced. The directive was not present yet in systemd version 241. When no seat is created, the user is ...
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Not able to boot from Kali after moved to SSD

I thought of moving my kali linux to SSD. For that I copied the whole existing Kali files hierarchy to the SSD partition. Updated the /etc/fstab file with UUID of SSD partition. Updated the grub. I ...
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Is this kind of log system harmful to the hard disk?

Recently I'm learning the web development and I found the applications will write their running logs into /tmp/appname/logs/a.log or /tmp/appname/logs/a.log.1 with the following format: {"message&...
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update-grub does not see my win10 installation

Most likely my problem is a bit deeper than what Subject says. A bit of history: This workstation was born as a Debian SID machine with root on SSD (sda2, partition now gone) and a separate /home ...
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Display s supported resolution is above the maximum supported one of the card. How do I decrease console resolution of the plain Linux console?

Max resolution of the vga card is 1440x900x32. So when the Linux kernel detects the resolution on boot of 1680x1050x32 supported by the screen through edid and set it to it, the image is croped to ...
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Turning off a server without HDD

I used my old laptop as a home server for about a year. Recently a HDD in this notebook passed away, while the server still keeps running and providing the basic functionality (DNS, DHCP). I expected ...
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1answer
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Try to setup static IP on CentOS

I am very new to Linux based operating systems. I can navigate terminal a little, I know how to "VIM". I am trying to give my machine a static IP. I need to get into and save an edited file ...
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command not found after switching users

Using debian, (running as an image for docker container), I run these following commands. user>>service (shows hints) user>>su - root root>>su - docker user>>service (command ...
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Yum crashed and Gnome desktop is disappear and unable to use yum now

I am using centOS7 and i was doing the yum update and my electricity went out and PC crashed. When I restart it only terminal appeared with command line. I tried to yum update again but am getting the ...
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why does this anacron job run hourly, not daily?

I'm running zulip on a virtual private server, and have created a script backup-zulip on my laptop (with ubuntu 20.04) to back up zulip via ssh. I want to run this script daily, so I put the line @...
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1answer
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Why do files disappear from an external USB hard drive when moved between Ubuntu servers?

Files saved on an external hard drive disappear when that drive is mounted to another computer. I have two Intel NUCs running Ubuntu 20.04 LTS server in separate physical locations, each with a 2TB ...
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Is it possible to record multiple Xvfb screens with audio seperatly?

We have some web video confrences. I am using Ubuntu 20.04 I want to record them by opening them in chrome and recording it using ffmpeg. each confrence opens in seperate Xvfb screen and I want to ...
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How can I get Linux Live Kit to work?

I'm just testing Linux Live Kit to see how to get it to work. I'm doing this while running a Linux Mint 20 with Cinnamon ISO in live mode while in VirtualBox, which is also running on Linux Mint 20. ...
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How to execute .sh file on Windows using Cygwin64

HI Imy trying to compile nms with comand ./make.sh but it wont work. So i was searching and found question here where people said using git for windows should work. So i tryed run ,,right click" ...
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Linux HomeBrew root user issues

I am new at Linux and I installed the HomeBrew to intall git, docker and so on... What I notice that has hapenned to me is... I install HomeBrew and some of what I mentioned before, the deal is that ...
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Linux packages API

I’m trying to build an API that gives information about a particular package across various distributions. For example if a user wanted to query ‘python’ to see what’s available in the repository they ...
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Lighttpd returns 403 for directory instead of 404

I'm not sure what changed in my configuration recently, but now it appears that if I am attempting to load a directory on my webserver that exists, but doesn't have an index, I get a 403 Forbidden in ...
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AMD-Vi: [Firmware Bug]: : IOAPIC[5] not in IVRS table

Booting Debian bullseye 5.9.0-1-amd64 #1 SMP Debian 5.9.1-1 (2020-10-17) x86_64 GNU/Linux on my Lenovo Ideapad 320 (lastest available BIOS) I get those firmware bug complaining about missing IOAPIC ...
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How to patch this source code with git (under Ubuntu 16.04)?

The full description of the task is as follows: 1.Use git to download the linux kernel source code from kernel.org 2.Use git to patch the kernel source code that you downloaded 3.Compile(or build) the ...
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Strange when add user to group in Ubuntu [duplicate]

This is Ubuntu 20.04.1 LTS. I execute the following command to add user "louyang" to group "vboxsf". $ sudo usermod -G vboxsf -a louyang The command seems ok without any output. ...
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How to connect multiple external hosts via ISP in a private network with dynamic routing?

My family is full of computer nerds. Each family has it's own home server with public IP and has it's own internal private network. We want to be always be able to reach each others computers and have ...
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1answer
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only 8gb storage on kali linux live on 64gb flash drive

I just got kali Linux Live and put it on my 64Gb flash drive. To install updates these take up to 6Gb of storage. I need your help to solve why I have about only 8Gb of storage on a 64Gb flash drive. ...
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Which flags to use on rsync to achieve full replication?

Hi since I have searched stack overflow and did not get info about this, I need to ask again with specific requirements. I have an old storage with approx. 4TB of data and I would like to sync it with ...
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1answer
20 views

Linux Sudo NoExec breaks timeout command

I've been battling sudo into getting /bin/timeout to work alongside another permitted command. For instance, what I'm trying to do is: john ALL=(ALL,!ROOT) NOEXEC:NOPASSWD: /bin/timeout, /bin/xx then ...
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RAM Issue: 8 GB shown usable by BIOS and Ubuntu only 4 GB free?

This is my current situation: $ sudo lshw -short -c memory H/W path Device Class Description =================================================== /0/0 memory ...
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tmux client-detached hook does not execute when terminal emulator closes

I have the following in my .tmux.conf file (and nothing else). set-hook -g 'client-detached' 'run "echo DETACH >> .tmux.log"' set-hook -g 'client-attached' 'run "echo ATTACH >&...
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Git Bash - invoking application “ImageViewer” results in “Permission denied” error

In linux, I use an application called "feh" to show an image from the commandline, and I found what I thought to be a similar application for Windows 10, Simple Image Viewer https://github....
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1answer
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Efficiently encode videos which consist of audio and only one image / frame

I have a video that is only one image and an audio track. It is very large and I would like to make it smaller. Since there is only one image/frame, I would think it would be more efficient if only ...
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9 views

Create double route within nginx

How to create two different routes in nginx with SSL CA? Whenever I call /app-name, I get a 404 error! My goal is to call <ip>/jenkins and be redirected to the jenkins front-end that is running ...
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Cannot create a WPA3 hotspot

OS: Ubuntu 20.04 Desktop: KDE Whenever I try to initialize a hotspot with WPA3 security, I see the following error messages: wpa_supplicant[1281]: Using interface wlp2s0 with hwaddr 7c:76:35:fa:61:35 ...
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libXext.so.6: error adding symbols: DSO missing from command line

i am trying to compile FreeRDP i have this cmake commands cmake -DMONOLITHIC_BUILD=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_BUILD_TYPE=Release \ -DWITH_SSE2=OFF -DWITH_ALSA=OFF -DWITH_FFMPEG=OFF -...
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PHPMyAdmin on CentOS 8

I'm currently trying to setup a test server in Virtual Box. It's CentOS8 and so far I have installed PHP, MySQL and SFTP. The only thing I am missing now is PHPMyAdmin however for some reason it doesn'...
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Ping works but not telnet

I want to telnet a target server from a Linux server. I ping the target server but telnet gets a timeout. I try to telnet the target server from my laptop (Windows 10) and it works. Can anyone tell me ...

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