Docs

As a CTO and Senior Linux System Administrator, I understand how vital a robust, scalable monitoring solution is for modern infrastructure. Nagios, ranked among the Top 10 Network Monitoring tools in 2023, delivers advanced visibility through its flexible plugin ecosystem. This guide offers a clear, best-practice approach to installing and configuring Nagios on CentOS, Rocky […]

V2Ray is a powerful tool to increase privacy over the Internet. Ubuntu 20.04 is the most suitable Linux distribution for installing V2Ray. It is possible to Install V2Ray on Linux, Windows, Mac, Android, and iOS. You are recommended to install V2Ray manually. SSH into your remote Ubuntu server and follow the below steps to install […]

Creating a new user in Ubuntu is an essential step for managing server environments efficiently, especially when you’re setting up a VPS. It ensures better control over who has access to your system and what they can do. There are two main methods for this process: CLI Method: The CLI method offers more precision and […]

DNS works like the internet’s address book, matching domain names to IP addresses, so your system knows where to connect. But cached entries can go stale or get corrupted, leading to failed connections, errors, or redirects. Clearing the DNS cache ensures accurate, up-to-date routing. Whether you are managing a server, troubleshooting a PC, or working […]

When sudo apt update not working, it usually points to broken sources, missing GPG keys, or unreachable repositories. The system fails to fetch package lists, blocking upgrades. To fix Ubuntu update error, check source URLs, re-add keys, update DNS, or clean cache. In most cases, running sudo apt update after these steps restores normal update […]

When encountering the apt Command Not Found error, it signifies a serious issue with your package manager, often due to missing binaries, outdated sources, or repository misconfiguration. This problem can severely hinder system updates and security patching, jeopardizing system stability. Resolving these issues is crucial for maintaining a secure, up-to-date system. Quick fixes include correcting […]

Managing MySQL or MariaDB via the command line can feel limiting. phpMyAdmin offers a faster, browser-based alternative for Ubuntu and Debian users. Use the below command to install phpMyAdmin on Ubuntu or Debian with Apache: sudo apt update && sudo apt install phpmyadmin This guide walks you through a secure, production-ready setup with full user, […]

Understanding and managing installed packages is essential for maintaining a secure and efficient Linux system. Installed packages refer to the software applications and system components added to your Linux environment via package managers. By regularly checking if a package is installed in Linux, you can ensure your system remains optimized and free from outdated or […]

A Virtual Private Server (VPS) offers more control, performance, and security than shared hosting, making it a top choice for businesses and developers. However, understanding how to setup VPS is crucial to unlocking its full potential. While beginners can follow a structured VPS configuration guide, basic knowledge of server management, networking, and security is beneficial. […]

Update a pip package to enhance your Python environment’s security, performance, and compatibility. To check for outdated packages, use pip list –outdated. When you need to pip update package to latest version, run pip install –upgrade package_name. Running pip update all packages ensures your system stays fully updated with the latest versions. Prerequisites to Pip […]

Windows Subsystem for Linux (WSL) allows you to run a full Linux kernel on Windows. By installing WSL on Windows, you can seamlessly integrate Linux distributions without the need for virtual machines. This guide will walk you through the easiest installation methods to Install WSL on Windows 10 and Windows 11. Automated Installation: Simply run […]

The bpftool command is an essential tool for managing and inspecting eBPF programs and maps on Linux. Install bpftool command in Linux is essential for users to perform advanced kernel-level diagnostics, and provide valuable insights into system performance and network tracing. To Install bpftool Command in Linux: Ubuntu and Debian-based distros: sudo apt install bpftool […]