
Harry Hill
Content Writer (I’m Harry, the CTO of OperaVPS and a Senior Linux System Administrator with a strong background in systems engineering, DevOps, and cloud infrastructure. Since 2020, I’ve been sharing advanced insights on topics like virtualization technologies, Linux performance tuning, and secure server deployment. My focus is on delivering in-depth content for developers and professionals who want scalable, reliable, and efficient solutions.

Install and Use traceroute Command in Ubuntu,CentOS,Fedora
Providing an uninterrupted service in the network and getting optimal performance from the network is a desire that all managers are trying to fulfill. To achieve this goal, a network manager must continuously monitor network performance and use network diagnostic tools to detect connection problems, delays, and possible network performance problems and troubleshooting. Traceroute is […]

How to Find IP Address in Ubuntu
The IP address is the number used to identify your computer on networks and the internet. IP Address in Ubuntu is used to view the local IP address, default gateway, and DNS servers. There are two methods to Find IP Address in Ubuntu. In this article, you will learn how to use the Command line […]

How to View Contents of File in Linux?
We all interact more with files on our personal computers. Viewing and editing the contents of important files such as configuration files, log files, text-based documents, and scripts is essential for various purposes. Configuration files are used for changes in system settings and programs, and log files are essential for detecting errors and troubleshooting the […]

How to Switch User to Another User in Ubuntu
Linux is a powerful and versatile operating system that allows multiple users to use a single system by creating separate personal user accounts. In addition, in Linux distributions, users can switch between different user accounts without setting and exiting the system while maintaining security and privacy. Therefore, if needed, you can switch to different user […]

6 Methods to Send Email From Command Line in Linux
Sending Email from Command Line?! It must be interesting for Linux administrators, developers, and users. Join us with this tutorial to learn How to Send Email From Command Line to make easier this essential task of the digital age. Also, you will learn to send Linux email attachments with the help of mail commands. There […]

How to Use Dig Command for DNS Lookup in Linux
Use dig command to query DNS servers for domain names, IP addresses, and DNS records. It helps troubleshoot DNS issues and perform advanced lookups on Linux systems. 🤖AI Overview: Use dig Command is a Linux utility that queries DNS servers to gather domain name system details including IP addresses and DNS record types like MX […]

How to Truncate File in Linux to Remove File Contents
Clearing the system of useless files and data and clearing the storage disk of the operating system is one of our daily tasks. It may have happened to you that you don’t need file data, and on the other hand, creating a new file with correct permissions and ownership is a time-consuming and challenging task; […]

Main SSH Commands List in Linux with Practical Examples
SSH stands for Secure Shell. It is a protocol that uses encryption to protect your sensitive data while transmitting over the network. So, SSH enables you to log onto a remote system securely and run commands on it. In this article, you will review the Main SSH commands in Linux with examples. For managing a […]

apropos Command in Linux: Complete Explanation with Examples
As a Linux user, if you have a problem remembering an exact command, this guide is what you need. When you need a specific Linux command, but you cannot remember it, the apropos command is a good helper. The apropos command in Linux looks for instructions using keywords that are supplied to it in the […]

Deleting File and Directory in Ubuntu Linux via 5 Commands
Optimal management of Linux requires familiarity with comprehensive Linux commands. Deleting useless files and directories is one of the users’ daily tasks to free up storage space and organize files. Deleting unnecessary files is a routine and simple operation in other operating systems, such as Windows, but Linux beginners may face challenges in deleting files […]

What is Difference Between su and su – Command in Linux?
Linux has a sea of commands for different purposes; for optimal use and management of Linux, you must be familiar with different commands. We try to familiarize you with the functions of various Linux commands so that after purchasing a Linux VPS, you can benefit from the features of Linux and achieve your goals. In […]

Commands to Get System and Hardware Information in Linux
One of the most activities of a Linux administrator or user is to get information about their Linux system. Observing the status of CPU, software, hardware, and more is possible by having Linux system knowledge. 23 Commands to Get System and Hardware Information in Linux are what you will review in this article.