Articles in Linux | UserComp.com

Getting an Un-expanded Command Line: A Tech Support Guide

Learn how to get an un-expanded command line, possibly through the /proc filesystem, by reading /proc/PID/cmdline.

Cannot Set Two Keyboard Layouts in Awesome WM (v4.3) on Debian 12

Learn how to set up multiple keyboard layouts in Awesome WM (v4.3) on Debian 12. This article includes a step-by-step guide and suggested configuration.

Updating Repos Version in Python: A Crossroad for Package Management

Learn how to update the version of your Python repositories during development, ensuring a smooth package management experience.

Debian 12: Is Geoclue Demo Agent Set for Automatic Startup?

Learn how to check if the Geoclue Demo Agent is set for automatic startup in Debian 12.

SSH Inaccessible: LightDM Starts on Debian 12 (iMac 2010)

This article explains how to access SSH on a Debian 12 (Bookworm) system running on a 2010 iMac when the LightDM window manager starts and prevents remote SSH access.

Adding Shutdown and Reboot Entries in Grub

Learn how to add Shutdown and Reboot options to your Grub menu with this simple guide.

Installing Debian on a 115GB Hard Drive: A Portable Linux Environment

Learn how to install Debian on a 115GB hard drive and create a portable Linux environment. This step-by-step guide covers partitioning, installing boot files, and other essential tasks.

Adding Unknown Video Format V4L2 Support for Infrared Webcam on Linux

Learn how to add support for an unknown video format used by an infrared webcam on a Linux PC. Despite the camera still producing /dev/videodev* devices, the video stream becomes unusable.

Linux Console: Plaintext SVG Display Preview for Remote Systems

Learn how to preview SVG images in the console of a remote Ubuntu system without graphical display.

Understanding Single Catalogue Loads in Translation Workflow: Python Example

This article explains how to find and load message catalogues using Python in a Translation Workflow. Understanding the process of loading a single catalog file is crucial for efficient localization.

Extending Root Filesystem on IBM Cloud Server with Debian: A Step-by-Step Guide

In this article, we will guide you through the process of extending the root filesystem on an IBM Cloud Server running Debian. Follow the instructions below to ensure a smooth experience. **Question:** I'm working on an IBM cloud server running Debian and need assistance extending the root filesystem. Here are the details: **Current Disk Layout:** ``` root@hanyg6266:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT ... ```

Troubleshooting SSH Remote Machine Delayed Connection (2 minutes) on Windows 11 and RHEL 9

Users have reported experiencing significant delays (2 minutes) when connecting to remote machines via SSH using Windows 11 cmd and RHEL 9 ttylogin server. This article provides suggested solutions to help resolve the issue.

Debian Installation Fails with virt-manager: Version 4.1.0 and QEMU 7.0

This article addresses the issue of Debian installation failing when using virt-manager with QEMU 7.0 and version 4.1.0. Users attempting to install Debian Sid VM through the GUI are met with an error during the 'Select Installation Source' step.

Resolving 'Not Valid Number' Zone File Error at maximal.enterprises

This article provides a solution to the 'Not Valid Number' error encountered while managing DNS zone files, specifically for the maximal.enterprises domain.

Boosting Audio in FFmpeg Without Re-encoding: Keep EXIF Data Intact

Learn how to boost audio in FFmpeg without re-encoding and keep the original EXIF data intact. Prevent changes to the audio type and metadata.

Fixing Boot Issues with Bootloader (Grub) on Arch Linux

Learn how to troubleshoot and fix Grub issues when installing Arch Linux, including setting up a boot partition and home partitions.

Upgrading Ubuntu: Checking Installed Kernels in the Boot Partition

Learn how to check Linux kernels still installed in your Ubuntu system by examining the /boot partition, ensuring a successful upgrade.

Routing Traffic: Static IP vs. DHCP on Ubuntu 22.04

Learn how to configure static and dynamic routing on Ubuntu 22.04 for a wired (eno1) and wireless (wls4) interface.

Unable to Configure Basic Authentication for Nginx on Raspberry Pi for Android v.14

This article provides a step-by-step guide to configure Basic Authentication for Nginx web server on Raspberry Pi to access it from an Android v.14 device. Despite following the instructions, Android insists on not getting the authentication to work, particularly for CalDAV calendars.

Unable to Find a Way to Permanently Delete an Ext4 Directory on Ubuntu 24.04

Learn how to permanently delete a directory and its subdirectories from an Ext4 filesystem on Ubuntu 24.04. Shift+delete and un-deleting methods did not work.

Memory Allocation Exceeds Memory Limit in cgroups v2 for Artificial Memory Load App

While working on an app that generates artificial memory load, the cgroups v2 monitor indicates a proximity limit has been reached. In this article, we'll discuss the simplest version of the app and explore possible solutions to address the memory allocation exceeding the memory limit.

Dual Boot System Messed: Windows 10 and Endavour OS Won't Boot

Yesterday, I tried to fix a dual boot system issue where Windows 10 and Endavour OS wouldn't boot. Here's a suggested abstract: Discover the steps I took to resolve a dual boot issue preventing both Windows 10 and Endavour OS from booting. Learn how to deallocate space in Windows and troubleshoot the bootloader.

Managing Multiple Open Windows with Byobu on Linux

Byobu is a terminal multiplexer that allows users to manage multiple windows and sessions. When working on research with many windows open, often running different experiments, Byobu can help save context and improve productivity. This article provides a brief overview of how to use Byobu for effective multitasking.

Error during Debian 12 Calamares installation: 'releasenotes' pop-up failed to execute default web browser

Users attempting to install Debian 12 using the Calamares installer may encounter an error where the 'releasenotes' pop-up fails to execute the default web browser. This article provides suggested solutions to resolve the issue.

Troubleshooting Transmission Permission Error: 'permission denied'

This article provides solutions to the common issue of 'permission denied' errors encountered during file transfers using the Transmission BitTorrent client. Google searches didn't yield satisfactory results, so we'll explore possible causes and fixes.

Bluetooth Not Running: Troubleshooting wlan0 and wlan1 Disappearance on Linux

This article provides a step-by-step guide to troubleshoot and resolve issues related to Bluetooth not running on Linux systems when wlan0 and wlan1 interfaces are not displayed. Follow these instructions to diagnose and fix the problem.

WSL: Bypassing SSH Key Password Prompt when Calling cmd using 'wslrsync'

A user is trying to call cmd using 'wslrsync' within WSL but is being prompted for an SSH key password. This article explains how to bypass the password prompt.

Offline LAN Text Paste/Copy: ChromeOS, Windows, Mac Chromebook – Which Method to Use?

Discover the best methods for offline LAN text paste and copy on ChromeOS, Windows, Mac Chromebook, and Linux. Learn how to use Web Browser, Android app, or Linux app.

Migrating SPNEGO Authentication in JBoss EAP 8.0 for Deployed Web Apps

Learn how to migrate SPNEGO authentication in JBoss EAP 8.0 for deployed web apps. Understand the security system changes and follow the steps to ensure a smooth transition.

IPTables NAT Forwarding for SSH on VPS with StrongSwan

Learn how to configure IPTables for NAT forwarding to allow SSH traffic through a VPS with StrongSwan.

Laravel Lumen: Storage/public Folder Not Accessible in Plesk

This article explains how to make the Laravel Lumen Storage/public folder accessible in Plesk, resolving the error thrown when trying to access files.

Configuring ONOSSDN controller for single device connection using two protocols

Learn how to configure ONOSSDN controller for connecting a single device using two different network protocols.

Guide: Using Test Ansible Plugins?

In this guide, we will discuss the usage of Test Ansible Plugins. Although I have seen a guide on this topic, I don't quite understand how to use plugins for testing. Let's explore this together.

KVM/QEMU: Resolving Static IP Address Assignment Issues with TAP Devices

When running operating systems on KVM/QEMU virtual machines using TAP devices for networking, static IP address assignment can cause issues. This article provides solutions to resolve such problems.

Color Differences Between FFmpeg 5 and FFmpeg 7 Decoded: Raw Video

Users report color differences when decoding H.264/H.265 videos using FFmpeg 5 and FFmpeg 7. This article decodes the issue and provides potential solutions.

Determining File Type: Identifying POSIX Tar Archives

When running the 'file' command on a file, the output indicates that the file is a POSIX tar archive (GNU). This article explains how to identify and confirm the file type using hex dump and Wikipedia resources.

Linux Server 2: No Internet Access - Troubleshooting with Linux Gateway

This article provides a step-by-step guide to troubleshooting network routing issues between Linux Server 2 and the internet, using Linux Gateway as an intermediary.

Configure Local Machine to Use Another Local Machine's DNSMasq for Local Domains in OpenShift Network

Learn how to configure your local machine to use another local machine's DNSMasq to resolve local domains in an OpenShift network.

HPZ2G9 Workstation: Not Booting into Ubuntu, No Entry into BIOS

The HPZ2G9 workstation, which has Ubuntu pre-installed, is not booting into the operating system. The system accidentally deleted essential packages during an update process, and the user cannot enter the BIOS. This article provides solutions to help users resolve the issue and boot their Ubuntu system.

Understanding Different Results of Arithmetic Operations in Linux: Case 1 vs. Case 2

In this tech support article, we will discuss the different results obtained from two different ways of performing arithmetic operations in Bash scripting on Linux. We will cover cases 1 and 2 and explain why they yield different results.

Creating a Blind Installation of Clonezilla: Installing an Image without Prompts after GRUB.cfg Bootdisk Creation

This article explains the process of creating a blind installation of Clonezilla, where the image is installed without prompts following the GRUB.cfg bootdisk creation.

Understanding Delta Transfers in rsync: Differences, Not Identical Files

rsync is a popular data synchronization tool known for its delta-transfer algorithm, which reduces the amount of data sent over a network by sending differences between source files. However, it's essential to understand that delta transfers don't transfer identical files, but rather two similar files with changes.

Troubleshooting: Wireguard Home VPN Connection Not Established

This article provides solutions to common issues encountered during the installation and configuration of a Wireguard home VPN, focusing on scenarios where the connection fails to establish.

Reaching Different Docker Containers Behind NAT: A TCP/UDP Communication Approach

Learn how to reach different Docker containers behind a Network Address Translation (NAT) without specifying port numbers using TCP and UDP communication.

Automatically Importing ZFS Root Pool in Proxmox

Learn how to automatically import the default created ZFS root pool in Proxmox and make it available as /rpool.work. This article covers the systemd service used for importing.

Void Linux: X Server Crashes When Opening Certain Webpages

Users of Void Linux report experiencing X Server crashes when opening certain webpages. This issue can occur randomly and may not always be reproducible. Possible solutions include updating the X Server and related packages, disabling hardware acceleration, or switching web browsers.

VSCode Doesn't Detect g++: Unable to Run C/C++ File on Linux

This article discusses a problem where Visual Studio Code (VSCode) fails to detect g++ on a Linux system. The user has installed g++ using NixOS and verified its installation with the --version command. However, VSCode still cannot run C/C++ files. This article provides possible solutions to resolve the issue.

Deleting Partitions: Best Practices for /dev/sda with Three Partitions

Learn the best practices for deleting partitions on a three-partitioned storage device, specifically /dev/sda, in this tech support article. Follow our steps carefully to avoid data loss and ensure a successful partition deletion.

Persistently Adding New Jobs in Jenkins: Old Instance Configuration Copied to New One

While moving data from an old Jenkins instance (2.193) to a new one (2.462), the new Jenkins instance constantly adds new jobs. This article discusses possible causes and solutions to prevent the issue.

FFmpeg Fails to Download M3U8/HLS Stream: Authtoken.ts Dropped

When attempting to download an M3U8 or HLS stream using FFmpeg, the software may drop the authtoken.ts file, preventing successful download. This issue can occur when the M3U8 playlist contains a list of .ts files, and FFmpeg is supposed to replace the .m3u8 file with the downloaded .ts files. In this article, we'll explore the possible causes and solutions to this problem.