Articles about linux | UserComp.com | Page [ 14 ]

How to Get Pre-Compiled Binaries for lp and lpstat

Resolve command not found errors for lp and lpstat by installing the cups-client package on Debian or Red Hat-based Linux systems.

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How to allow Linux PAM Authentication for non-Local users

Configure Linux PAM to authenticate non-local users against LDAP or Active Directory by installing required packages and editing the common-auth file.

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WSL2 and Mirrored Network Mode: A Compatibility Overview for Dev Projects

Resolve WSL2 network traffic mirroring incompatibility by using port forwarding or Docker Desktop integration instead of unsupported Hyper-V mirrored modes.

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Capturing Windows that Open Lightning Fast in Linux Mint Cinnamon

Capture fast-opening windows in Linux Mint Cinnamon using scrot delays or xdotool automation to overcome human reaction time limits.

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Making Keyboard Button Perform Left Click with AutoHotkey: A Tech Support Guide

Map a keyboard key to simulate a left mouse click using AutoHotkey for rapid-fire clicking in gaming or data entry.

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Unable to Boot Kali after Update: Seeking Help to Parse Logs

Resolve Kali Linux boot failures after updates by diagnosing broken kernels or corrupted initramfs using journalctl and dmesg logs in TTY.

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Stuck Growing mdadm Array (raid6, LVM, ext4) with 7x2TB and 7x4TB Drives

Resolves stuck mdadm RAID6 growth by detailing the sequential drive replacement, reshape, and LVM extension steps for mixed 2TB and 4TB drives.

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Get Value-Based Letter Grade Index: A Tech Support Guide

Map numeric scores to letter grades using VLOOKUP with approximate matching on an ascending sorted lookup table.

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Understanding the Relationship between Address Bus and Virtual Memory

Explains how virtual memory overcomes physical address bus limitations by mapping logical addresses to physical RAM using the MMU and paging.

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Can't sign into Github Desktop on arch linux after power outage

Resolve GitHub Desktop locked state and sign-in failure on Arch Linux after power outage by clearing corrupted local cache and configuration files.

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Sum Values Based on Unique Values: Column Filter Applied for Order Numbers in Tech Support

Prevents double-counting revenue by summing values only once for each unique order number in spreadsheets.

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Connect Multiple Devices to a Computer/iPhone using Hotspot

Resolve connectivity issues by enabling mobile hotspot on Windows, Mac, or iPhone to share internet with multiple devices.

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Create Additional Users in AWS: A Step-by-Step Guide

Create AWS IAM users with console or programmatic access and assign granular permissions via policies.

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How to Install Alibaba PuHui Ti Font on Linux System

Resolve missing Alibaba PuHui Ti font rendering in Linux applications by installing the typeface and updating the system font cache.

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Bind-mount AWS Credentials in Dev Container for Development in VS Code (Portable)

Resolve insecure credential sharing in VS Code Dev Containers by bind-mounting local AWS credentials to maintain portability and security.

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Why does the mount syscall not work with selinuxfs?

Explains why the mount syscall fails on selinuxfs because it is a kernel-managed virtual filesystem that does not support manual mounting.

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Finding Registered DLL Class Name for Elderly Application Replacement

Identify registered DLL class names or CLSIDs for legacy applications using safe read-only registry queries on Windows and desktop files on Linux.

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Differences in Running 'wlsstart' Scripts with Absolute vs. Relative Paths in RHEL8 Linux

Resolve wlsstart script failures in RHEL8 caused by differences between absolute and relative path execution contexts.

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Resolving DNS Issues with Rocky Linux 8 Virtual Machines

Fixes DNS resolution failures in Rocky Linux 8 VMs by verifying NAT connectivity and correcting systemd-resolved settings.

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Can Apache be gracefully restated without clearing the mod_cache_socache cache?

Preserve mod_cache_socache data during Apache configuration updates by using a graceful restart instead of a full service restart.

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How to display “pts_time=…” while playing the video with ffplay

Display pts_time as a video overlay in ffplay using the drawtext filter to debug synchronization issues.

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

Resolve inconsistent Bash arithmetic results by replacing the legacy expr command with $(( )) to ensure correct operator precedence and avoid exit code errors.

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Laptop Shuts Down Without Access to UEFI or GRUB Boot on SSD

Resolve laptop shutdowns caused by UEFI failing to detect the SSD and preventing GRUB boot.

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Access SAMBA Drive Denied: SSH Ping Working on Two Devices

Resolve Samba access denied errors on Linux by configuring firewalld or ufw to allow TCP ports 139 and 445 and verifying smb.conf authentication settings.

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Windows Installer Cannot Recognize Drive: Linux Mint Installed

Resolve Windows Installer failing to recognize Linux Mint drives by verifying AHCI BIOS settings and ensuring consistent UEFI partition tables.

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Recovering Damaged LUKS-Encrypted BTRFS Partition in Virtual Machine

Recover data from a damaged LUKS-encrypted BTRFS partition in a virtual machine caused by interrupted file operations.

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Unable to add existing virtual machines in VirtualBox

Resolve VirtualBox error when adding existing VMs by locating the .vbox configuration file instead of disk images and verifying file permissions.

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Best Advice for Tech Support: Linux, Windows, and MacOS

Resolve technical issues across Linux, Windows, and macOS by applying systematic diagnostics, log analysis, and hardware verification.

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Linux Bash Wait Command Not Working: A Solution for Running Multiple Scripts Simultaneously

Resolve Linux Bash wait command failures with subshells by explicitly capturing background process PIDs to ensure reliable script synchronization.

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Potential Dangers of Using Different Sized Disks in ZFS RAIDZ

Explains how ZFS RAIDZ wastes capacity on larger drives by capping them to the smallest disk size, causing resource inefficiency and performance bottlenecks.

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How to Repair WSL Ubuntu After Uninstalling Terminal Emulator

Resolve missing WSL Ubuntu access after uninstalling a terminal emulator by reinstalling Windows Terminal or launching via PowerShell.

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Forward TCP Packets Using SSH

Securely tunnel TCP traffic to access remote services behind firewalls using local, remote, or dynamic SSH port forwarding.

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Implement PMTU Discovery on UDP Connection for VPN Tunnel

Resolve VPN UDP packet drops and black holes by enabling Path MTU Discovery in Linux to prevent fragmentation.

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Reboot to Specific GRUB Entry Whenever Wish, Skipping Menu

Use grub-reboot to force a one-time boot into a specific GRUB entry, bypassing the menu for automated or headless systems.

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Setting up Audible Notification for New Posts as Super User

Configure cross-platform audible notifications for new forum posts using polling scripts and native system audio APIs.

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Misconfigured Files: Web Labs, SSH Server, ping, traceroute, and Web Apps Not Working on Main VM (SSH via Browser Works)

Resolve failed web labs, SSH, and ping on Ubuntu VMs by correcting service binding to 0.0.0.0 and configuring ufw firewall rules.

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IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready message repeating every minute

Resolve repetitive IPv6 link ready log messages by disabling conflicting network services or turning off IPv6 on the interface.

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Migrating BTRFS Profiles to mdadm RAID: A Home NAS Setup Guide

Migrate data from BTRFS to mdadm RAID by evacuating files, wiping old partitions, and creating a new mirrored array for hardware-level redundancy.

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Understanding KEX Algorithms in sshd_config: Does 'pseudo' Override or Take Effect?

Resolve sshd_config errors caused by invalid KexAlgorithms pseudo setting and configure valid modern key exchange algorithms.

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Unintended Ubuntu Server Access on Port 8080: WeKan Instance

Resolve port 8080 conflicts caused by unintended WeKan Docker instances on Ubuntu Server.

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How to Set Proxy on Login if Proxy Server is Reachable

Resolve application connection timeouts by conditionally setting proxy environment variables only when the proxy server is reachable at login.

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Determining Path in Ash Shell: Sourcing Scripts

Resolve command not found errors when sourcing scripts in Ash shell by using absolute paths and ensuring a space between the dot and file path.

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Remapping Keyboard Layouts: A Cross-Platform Solution for GUI Apps on Windows, Linux, and macOS using PowerToys

Resolve inconsistent keyboard remapping across Windows, Linux, and macOS GUI apps by using PowerToys, Karabiner-Elements, and xmodmap respectively.

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GDM Denying Access: Unable to Login Linux Session with GNOME Interface

Resolve GDM login failures by checking system logs, unlocking accounts, and restarting the display manager service.

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How to Forward /var/log/yum.log to Remote Logging Server using rsyslog.conf?

Configure rsyslog to forward /var/log/yum.log to a remote server for centralized auditing of package management events.

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Linux Bash: Convert Date-Time Formats with Ease

Resolve ambiguous date parsing in Bash by converting DD/MM/YYYY strings to ISO 8601 format before using the date command for reliable output formatting.

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Requirements for Setting up a Linux Network Bridge with IP Address

Assign an IP address to a Linux network bridge by migrating the configuration from the physical interface to the bridge device.

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Track Product Sales with Multiple Date Filter Criteria

Resolve cross-platform product sales tracking issues by applying multiple date filter criteria in LibreOffice Calc and Excel.

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Fedora 40: DNF Not Installed for Brave Browser Installation

Resolve DNF not found errors during Brave Browser installation on Fedora 40 by verifying system integrity and using the correct repository configuration steps.

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Debian Still Complains "user1" Not a Sudoer After Running 'usermod -aG sudo user1'

Resolve sudo permission denial after usermod by logging out and back in or using su - to refresh PAM group cache.

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