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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TCP packets lost between kernel and application (Android USB Tethering)

I have a Samsung Galaxy S10, whose USB Tethering feature has some issues when used with Linux. Samsung users have been complaining for months about various issues with USB Tethering after certain ...
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Fresh linux install changing boot priority for reasons I can't understand

Recently installed Manjaro KDE on a new SSD with no problems. Windows 10 on a separate HDD. When installing I was prompted what drive to launch the boot-loader, I selected the SSD. No problems. On ...
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Cannot boot Fedora on one PC

I've problem with my Fedora 32 boot. Firstly, sorry for my ignorance in this topic and sorry if I wrote something wrong. What's going on? I don't see it as bootable in my Asus UEFI BIOS UTILITY, but ...
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Web results Why are the lightweight linux distros so light? [closed]

Linux distros like slax and puppy os are very light and still come with a usable os that has a desktop environment and other softwares. But the barebones Arch Linux has is many times heavier(still ...
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understanding syslog logs format

Im geting syslogs from multiple servers, and Im having trouble to understand some syslog logs, here is one example <189>12593340: 16596512: Jul 6 20:31:09: %PARSER-5-CFGLOG_LOGGEDCMD: User:...
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Command-line tool to show key events, but running in the background

Is there a command-line tool that shows "key pressed"-events like xev, but is running in the background and doesn't need the input focus? I want to record terminal input with asciinema, ...
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systemd / udisksd ignores /etc/fstab for mounting a Kindle as a mass storage device

For a Debian 10 machine, I have /etc/fstab set up like this for USB mass storage things: /dev/sdc1 /flash auto user,noauto 0 0 /dev/sdd1 /flash2 auto user,noauto 0 ...
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High CPU Load on CentOS 7 on esxi

We are facing some performance issues on applications in production on upgrading from CentOS 6 to CentOS 7. For debugging, we did a benchmark exercise where we ran 4 threads of the following python ...
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Cut delimiter works in terminal and not script

cut -d$'\n' -f5 /home/me/Documents/file.txt This works perfectly fine when ran in the terminal and returns the fifth line of the file. But in a script AWKED=`cut -d$'\n' -f5 /home/me/Documents/file....
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Linux live boot vs install on external hard drive

I'm trying to understand the differences between a live boot and an install on an external hard drive. I have a hard drive design to support windows to go. Which I've partitioned to have a live boot ...
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ssh execute remote program “error while loading shared libraries”

The setup is as follows: servers A and B are both running Ubuntu 18.04. On A, I run ssh user@B "~/my_program" where my_program has been compiled and can run successfully on B. This command ...
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Is there a way to set something like `GIT_OPTIONAL_LOCKS=0` on a per-repository basis?

Use case: I am using Git to track history of personal notes that are automatically synced between my computer and my phone (via Syncthing). I use git status before committing from a different device ...
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ssh remote command with zsh: zsh:1: no matches found

I am writing a script to zip some file on remote server and then transfer it. I got the error with remote ssh command and wildcard like that ssh 1.2.3.4 "ls /home/lhc/*.txt" zsh:1: no ...
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Troublesome Dell Precision 3530 Laptop - won't accept Mint 20 or Ubuntu 18.04

What I really want is to put Mint 20 on my dell-precision-3530, which came preinstalled with Ubuntu. I installed Mint 19.3 Cinnamon on it without a problem a while back, but not anymore. The problem ...
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How could I find out what sample rate/bit depth my headphones are capable of?

I'm using some USB headphones (Sennheiser GSP 350) and want to make sure that I am using the highest sample rate and bit depth possible for them. I ran pacmd list-sinks and it said that I'm using 16 ...
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Issues trying to install ubuntu 18.04 via usb bootable device

i am trying to set up a ubuntu linux setup via bootable device. Whenever i try to boot, the ubuntu wallpaper/picture(?) Shows up and then it goes all blank with an underscore "_" blinking at ...
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Weak Wi-Fi in the Debian distribution

my friends and brothers, since the Debian distribution was installed, stable version, distribution number 15.11. I saw a weakness in the Wi-Fi. I think that the problem in updating the kernel is that ...
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Extract tar.gz file to a directory and create the directory if not exist

I know that I can run $ tar xf somefile.tar.gz -C somedir to extract the tar.gz file to somedir, but it requires somedir exists first. Is there a way to extract to a directory and create the ...
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Restarting remotely a PC with encrypted drive

I've got a remote PC which I'm connecting to over the Internet. The PC has an encrypted drive. When I power it on, it first asks for a password to unlock the drive. If I've logged into it remotely and ...
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Why do .sha256 hash files include asterisk before and after filenames?

I've seen .sha256 files for software such as: this_is_a_fake_sha256_hash_of_64_characters file_name.exe Or: this_is_a_fake_sha256_hash_of_64_characters *file_name.exe Or: ...
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Command history lost

Is there a way to know if someone (including system administrators) has deleted the bash commands history on purpose? (the history -r doesn't seem to work) And is there any way to recover that history?...
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Change application icon (not menu-/launcher icon)?

I have recently 'discovered' how to use different profiles in firefox, which is handy; and I know how to change the icon shown in the KDE menu etc. However, the running applications still show their ...
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Is there a way to install linux (mx,mint..) from windows 10 on thinkpad lenovo tp440 using unetbooting hd mode(no usb avaliable, no dvd drive)?

I easily installed linux using this method on several machines years ago. But on this Thinkpad TP440 I can't even boot on live mode. Tryed with safe boot on/off, uefi/legacy, but can't get to the grub ...
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Ubuntu Mate 18.04.2 LTS drops wifi while moving

I am using Ubuntu Mate 18.04.2 LTS in warehouse and while workers drive the wifi is keeps doping while moving from one AP to another. This would not be a problem if they are using just only Raspberry (...
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bash server that can communicate both ways with remote client

I am trying to do a simple server in bash with netcat that accepts commands from remote machine and returns some data back, I know that other languages are better suited for this task but I am trying ...
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Install other OS than DSM on Synology DiskStation DS16SE — possible?

The DS216SE will eventually reach its end of support. [EDIT: it is not as soon as triggered this question originally,* but that only postpones the issue. Also I'd prefer a less restricted access.] Are ...
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After removing linux partition from MacOS, it still loads into GRUB and no longer is able to find mac. How to fix this?

I had previously installed Linux Mint alongside my macos 'ElCapitan'. Both systems were booting correctly. However, after I decided remove linux, I was no longer able to boot into macos and am ...
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“bash: /usr/lib/command-not-found: /usr/bin/python3: bad interpreter: No such file or directory” error when trying to install something

I apologize, I don't have much experience with Linux. So I have ruby installed on my machine and I'm trying to install rails. When I do gem install rails I get a proper response Successfully installed ...
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FFmpeg output sent to v4l2loopback video device won't be read by guvcview

I set a dummy camera /dev/video1 with v4l2loopback module. I can read the stream with ffplay, vlc or even zoom of this camera when I send to it contentwith ffmpeg: ffmpeg -re -i input-file.mp4 -f v4l2 ...
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How can I run postgres with data dir on /tmp?

I'm running automated integration tests using data stored in a postgres database. I need to start every test run with the same database contents. Instead of always clearing the database and importing ...
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How to bridge a virtual interface inside docker container?

Let me re-organised the question. I have used a similar docker-compose yaml file as below. version: "3" services: app: build: ./app networks: - frontend networks: ...
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Ubuntu ethernet configuration on start-up

OS: Ubuntu 20.04 Each time that I start the pc and log into my account the Connection doesn't work and the ethernet icon does not appear in the top-bar. if I run sudo lshw -C network it says that ...
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Multiple SSH keys on CentOS

Scenario: I have a project using Bitbucket as a remote repo for Git. Local environment is a MacBook Pro, remote (production) environment is CentOS. Generated a keypair on the MacBook Pro, placed the ...
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Does the queued TRIM support in SATA 3.1 require support from the SATA controller, or just from the OS and the SSD?

I am contemplating expanding the storage on my home server with a SATA expansion card and wonder if the card has to support queued TRIM to use it or if it is just an OS+SSD thing. Hardware example My ...
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Display scaling setting - difference between Gnome Tweaks and Gnome Display

Both tools seem to offer a way to change the scaling of the display, however it is not clear to me how they are related and which controls what. Also, they don't seem to be in sync. What is the ...
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How does Gnome Files choose the user when mounting a drive

I have a USB drive with two partitions on it: one ext4 partition of 100GB and one ntfs partition of 20GB. When I plug the drive in, Gnome Files automatically mount them on /media/<user>. However,...
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How to check OS image root directory permissions without booting it?

I recently recognised that the root directory of an (ext4) partition actually has UNIX permissions stored, although when mounting a partition from within a running OS it is not visible since its ...
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How to set default user for manually installed WSL distro?

I have cloned a WSL distro using wsl --export and wsl --import, but now, running wsl newdistro always logs me in as root. I understand that the lxrun command is deprecated and want to avoid it. The ...
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Python sockets protocols have the same value

So i am reading this book and in chapter about packet sniffing i uses this s = socket.socket(AF_PACKET, SOCK_RAW, sock.htons(0x0800)) I looked up to which protocol has the value 8 since htons(0x0800) ...
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stuck in POST for an OptiPlex 790 series with no Boot Options

The BIOS shows: OptiPlex 790 Series BIOS Revision A11 the bar is fully across for finishing POST but won't proceed. I've swapped keyboards. It's fairly newly purchased. There's only keyboard and ...
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Extract multipart rar, deleting parts as they are extracted (linux)

Basically [this][1]. Any way to do this is linux using commandline? Thanks! [1]: https://superuser.com/questions/1031625/extract-multipart-rar-deleting-parts-as-they-are-extracted
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Why are my badblocks results inconsistant with SMART results for an SSD?

I have an SSD that has been running for years. It was part of a RAID0 that failed. The other SSD in the array was definitely bad - it doesn't show up at all when I plug it into a computer anymore. I'm ...
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Assign different keyboard layout to each keyboard

I am using different keyboards on my Debian machine in parallel (e.g. a German layout and an US layout). Is it possible to assign a keyboard layout to each of these hardware keyboards without ...
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different types of shared libraries [migrated]

I was using assimp(on linux) for loading 3D models into my project and building the library itself is very easy since it has a cMakeLists.txt file that automates the build process. But, once the ...
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Is it necessary to protect GRUB with a password if your volumes are encrypted with LUKS?

I understand there are vulnerabilities around somebody using grub to boot into single user mode and escalate privilages on your machine. But is there any purpose in doing this if your volume is fully ...
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Run software even after closing the terminal

I do have a server installed which I always need to run in terminal. The command looks like software server Now i want this to run in the background without the need to keep the window open. I ...
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Raspberry Pi: Remount Network Drives automatically?

I am pretty new to the raspberry-thing, so bear with me (though i have some experience with Debian). I got a network drive that will get rebooted by it's System every night when no traffic is present (...
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Linux setfacl options (-b,-x) differences

What is the exact difference between -b and -x option in the Setfacl command? are they the same? if not what is the difference?
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How to make virtual machine app accessible on internet

I have access to a server using ssh with public IP where I have put Virtual Box with 2 virtual machines I want to make this 2 virtual machines online what do you propose as solution? I have there IP ...
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No WiFi Icon on Mate

I was using my Linux machine and one day my WiFi icon disappeared, it was working along time ago so i had no idea why it was not working. I downloaded kde-plasma to use when i connected through ...

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