Harry Hill

Content Writer ( 130 Articles )

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.

fix sudo command not found error in linux

2 Methods to Fix sudo: command not found Error in Linux

sudo command not found error means sudo package is not installed or PATH variable does not include sudo’s directory. To fix this bash error, you can install sudo in linux using apt install sudo command (apt package manager for Debian-based distributions).

How To Get The Server's Hardware Details In Windows

How To Get The Server’s Hardware Details In Windows?

Sometimes we need to get the server’s hardware details like RAM, CPU, Motherboard, and Graphic card and find out how they operate. Or maybe we need to stress the CPU or Storage system to find out its power. To do this in Windows without any software, unfortunately, you are limited. So in this tutorial, we […]

ps command in linux

ps Command in Linux to View Process Information

Sometimes, seasoned Linux users need to review running processes in order to make changes, review the information of a process, or kill the process. On the other hand, Linux newbies will be in need of the ps command sooner or later.

How to Use fsck Command in Linux

Use fsck Command in Linux Ubuntu and CentOS

File systems play a crucial role in organizing, storing, and retrieving data on storage devices, and the failure of file systems can have irreparable consequences. As a Linux system administrator, you should prioritize the maintenance and health of the storage system and enhance your knowledge in this area. The powerful command-line tool fsck (file system […]

What is tee Command in Linux and How to Use it

tee Command in Linux to Manage Command Output

Linux Terminal is a valuable advantage because it is a powerful component of Linux, making Linux system management more flexible and efficient for administrators. That’s why most experienced and expert Linux users prefer using the terminal to interact with and manage the Linux system over a graphical user interface (GUI). While using the Linux terminal […]

What is tail Command in Linux

Mastering the tail Command in Linux for Developers

tail Command in Linux displays the last lines of a file in real time. Developers use it to monitor log files or outputs. Use tail to track changes without reopening the file. 🤖AI Overview: The tail Command in Linux is a utility that displays the last part of text files or streams directly in the […]

How to Use uptime Command in Linux

Use uptime Command in Linux

Your proficiency with Linux will undoubtedly improve as you gain a more profound comprehension of its commands. So, Acquiring skills in using Linux commands is essential for Linux administrators. A Linux administrator’s awareness of how long their Linux system has been running, the number of users currently logged into their system, and the system’s load […]

All about Ulimit Command in Linux

Limit System Resources with ulimit Command in Linux

In Linux, you can control everything! The resources of the system must be managed to not be deleted on intention or accidentally which leads to some troubles for users on the system. To do this, admins need to create restrictions for the user and allocate resources in the most effective manner possible based on requirements. […]

Practical Examples of Linux Export Command

Linux export Command with Practical Examples

Environment variables are a fundamental part of the operating system that are used by the shell and various processes to store information related to system settings and configurations. The export command in Linux is a built-in command in the Bash shell used to set environment variables. When you start a new shell session, it will […]

Examples to Use touch Command in Linux

Helpful 12 Examples to Use touch Command in Linux

In Unix/Linux operating systems, the touch command is used to create, change, and modify the timestamps of a file. In other words, the touch command creates a file without any content. In this article, you will learn How to Use touch Command in Linux. It creates a file only if the file does not already […]

Best Methods to Run Linux Commands in Background

8 Top Methods to Run Linux Commands in Background

Running Linux commands in the background is helpful for various reasons; this capability allows you to execute multiple commands simultaneously in a terminal session without waiting for one command to complete. This feature is particularly beneficial when dealing with lengthy data processing or file transfers, which are time-consuming processes. It results in time savings and […]

How to Install Nano Text Editor on Linux

How to use and install Nano Text Editor on Linux

You will require a command-line environment in order to create or modify text files. For Unix and Linux operating systems, Nano is a popular text editor. Nano is a strong piece of software that allows you to modify and generate a variety of files. For those seeking simplicity, Nano is an excellent option. It has […]

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