F.A.Q

Upgrading Ubuntu is an essential part of maintaining a secure and optimized system. However, sometimes users may encounter an error during the upgrade process, such as the “Upgrade Ubuntu Install Updates” error. This issue can prevent you from successfully upgrading your Ubuntu system and can be frustrating to troubleshoot. In this article, we’ll explore the […]

Using ssh-copy-id & ssh-keygen Commands in Linux Secure Shell (SSH) is a crucial tool for securely connecting to remote systems. To improve security and ease of access, SSH key authentication is often preferred over password authentication. Two important commands in this process are ssh-keygen and ssh-copy-id. Generating SSH Keys with ssh-keygen The ssh-keygen command is […]

Node.js is a powerful JavaScript runtime that allows you to build scalable and high-performance applications. PM2 is a process manager for Node.js applications that enables you to keep your applications running continuously, even after a system restart. In this guide, we will show you how to install Node.js and PM2 on Ubuntu. Step 1: Update […]

Introduction When managing a Linux server, providing restricted access to users for file transfers without granting full shell access is a common security concern. Two tools that help achieve this are rssh and scponly. These restricted shells allow users to perform specific file transfer operations via SCP, SFTP, and rsync while preventing command execution. In […]

Firewalld is a powerful firewall management tool used in Linux distributions such as CentOS, RHEL, and Fedora. It provides a flexible and dynamic way to manage firewall rules, allowing users to define security policies effectively. One of the key features of Firewalld is rich rules, which provide more granular control over network traffic compared to […]

How to Install DirectAdmin on VPS DirectAdmin is one of the most popular web hosting control panels, offering an easy-to-use interface for managing web hosting services. It is often favored for its simplicity, lightweight resource usage, and robust features. If you’re planning to use DirectAdmin for managing your VPS  (Virtual Private Server), this guide will […]

Perl, which stands for Practical Extraction and Reporting Language, is a versatile, high-level programming language known for its capabilities in text manipulation, data analysis, and system administration tasks. Developed by Larry Wall in 1987, Perl has been a popular language for web development, network programming, and data processing due to its flexible syntax and rich […]

Nmap (Network Mapper) is a powerful open-source tool used for network discovery, security auditing, and vulnerability scanning. It is widely used by system administrators and security professionals to identify live hosts, open ports, and running services on a network. This guide provides an overview of Nmap’s usage, options, and practical examples. If you need a […]

The ss (Socket Statistics) command is a powerful utility in Linux used to display detailed information about network connections. It is a faster and more feature-rich alternative to the older netstat command. This guide explores the usage of ss, its options, and practical examples for managing network connections effectively. If you’re looking for a reliable […]

Knowing your system’s CPU details is essential for monitoring performance, troubleshooting issues, and ensuring your applications run efficiently. Linux provides multiple ways to check CPU specifications using built-in commands. Here are several methods you can use to retrieve CPU information on a Linux system. 1. Using the /proc/cpuinfo File The /proc/cpuinfo file contains detailed information […]