Author: Rahul

I, Rahul Kumar am the founder and chief editor of TecAdmin.net. I am a Red Hat Certified Engineer (RHCE) and working as an IT professional since 2009..

When working with Linux, you might encounter situations where a specific port is occupied by a process, preventing you from using that port for other applications. Knowing how to kill a process running on a specific port can be very useful, especially for troubleshooting and managing your system effectively. This step-by-step guide is designed to help beginners understand how to identify and terminate these processes with simple, clear instructions. We’ll walk you through the process of finding the port number, identifying the process using that port, and safely stopping the process. By the end of this guide, you’ll have the…

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Over the time, the Linux systems can have a large number of packages that are no more in use. These packages can take up huge disk space and might reduce your system overall performance. This guide will show you how to easily remove these unused packages. It’s important to keep your system clean and efficient, but be cautious: removing essential packages can cause your system to malfunction. Only remove packages you are sure are no longer needed. Why Should You Remove Unused Packages? There are several reasons to remove unused packages from your system: Free Up Disk Space: Unused packages…

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In programming, efficiently managing and displaying the current date and time is a common task across many applications. The Go programming language, with its powerful standard library, makes handling date and time straightforward and effective. This beginner’s guide will walk you through using Go’s time package, which offers a wide range of functionalities for date and time operations. Whether you’re building a logging system, scheduling tasks, or adding timestamps to events, understanding how to manipulate date and time in Go is crucial. Let’s explore the versatility of the time package and how you can use it in your Go projects.…

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When working with Docker containers, you might need to know the IP address of a specific container. This can be useful for debugging, networking, or connecting to services running inside the container. This guide will show you how to easily find the IP address of a Docker container using simple commands. Why You Might Need the IP Address There are several reasons you might need to find a Docker container’s IP address: Connecting to Services: Access services running inside the container from your host or other containers. Networking: Set up network configurations or troubleshoot networking issues. Debugging: Investigate connectivity problems…

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Sometimes, you might want to grant a user sudo privileges for only specific commands instead of full administrative access. This guide will show you how to do that easily. We will also provide an example and a test scenario to ensure it works correctly. Keeping security in mind, you should allow only required permission that a user required to do there work. To allow command-specific sudo privileges to a user to run only certain commands with superuser rights. This can enhance security by limiting the user’s abilities. Note: Be careful while editing the sudoers file. Mistakes in this file can…

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Installing LibreOffice on Ubuntu and Linux Mint using a Personal Package Archive (PPA) is a simple process that beginners can easily follow. LibreOffice is a popular, free, and open-source office suite that includes applications for word processing, creating spreadsheets, presentations, and more. Using a PPA ensures you get the latest version of LibreOffice directly from the developers, keeping your software up-to-date with the newest features and security improvements. This guide will walk you through each step of the installation process, making it easy for anyone, even those new to Linux, to install LibreOffice on their system. Installing LibreOffice using PPA…

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In Linux, granting sudo privileges to a user allows them to perform administrative tasks. This guide will show you how to do this in a simple and clear way. We will also provide a working example and a test scenario to ensure everything works as expected. Understanding Sudo Privileges Sudo (superuser do) allows a permitted user to execute a command as the superuser or another user, as specified by the security policy. Granting sudo privileges means giving a user the ability to execute these commands. Steps to Grant Sudo Privileges Follow these steps to grant sudo privileges to a user:…

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The update-alternatives command in Debian is a helpful tool to manage different versions of software on your system. It allows you to easily switch between different versions of the same program. Assuming you have installed multiple Java versions or Python versions on a single system. With the help of update-alternatives you can set any version of the program as the default version for your system. What is update-alternatives? update-alternatives is a command-line tool that helps you set up, maintain, and manage symbolic links for different versions of software. These symbolic links point to the actual files on your system, making…

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MariaDB is a popular, open-source relational database management system that is a fork of MySQL. It is widely used for storing and managing data. This guide will walk you through the steps to install MariaDB on Ubuntu 24.04. Follow these simple instructions, and you will have MariaDB running on your system. Steps to Install MariaDB on Ubuntu 24.04 Here is the step-by-step instruction to install and configure MariaDB database server on Ubuntu 24.04 Noble Numbat Linux system. Step 1: Update Your System First, we need to make sure that all the existing software on your system is up-to-date. Open a…

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This guide will show you how to install .NET 8.0 on Ubuntu 24.04. .NET is a free, open-source platform used for building different types of applications, like web apps, mobile apps, and desktop apps. With .NET, you can create powerful and flexible software. For example, you can build a website using ASP.NET, develop mobile apps with Xamarin, or create desktop applications with Windows Forms or WPF. Installing .NET on your Ubuntu system will allow you to start developing these types of applications quickly. Steps to Install .NET 8 on Ubuntu 24.04 Follow the steps below to set up .NET 8.0…

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