Pre-shared key (PSK) is a security mechanism used to protect network communication by ensuring that only authorized devices can access it. It is a shared secret key that must be kept confidential to prevent unauthorized access to network. In Linux, there are several ways to generate a strong PSK, and in this article, we will discuss four of them. Use Random Characters One of simplest ways to generate a strong PSK is to use a random combination of characters. This can be done using a Linux command-line utility called "openssl." To generate a PSK using openssl, open a terminal and ... Read More

Linux is a popular operating system that is widely used by system administrators, developers, and other tech enthusiasts. One of important tasks in managing a Linux system is to identify which ports are being used and which ones are available. In this article, we will discuss 4 ways to find out what ports are listening in Linux. Using netstat Command The netstat command is a powerful tool that provides detailed information about network connections, routing tables, and other related statistics. To check which ports are listening, you can use following command − $ netstat -ltn This command will display ... Read More

If you're using CentOS or RHEL (Red Hat Enterprise Linux), you might be wondering how to check what version you're running. Luckily, there are several easy ways to find out. In this article, we'll go over four methods you can use to check version of CentOS or RHEL that you're running. We'll also provide examples and step-by-step instructions for each method. Check /etc/redhat-release File The first method we'll cover is to check contents of /etc/redhat-release file. This file contains information about version of CentOS or RHEL that you're running, including release number and update level. To check contents of /etc/redhat-release ... Read More

Ubuntu is one of most popular and widely used Linux distributions. It is known for its simplicity, reliability, and performance. However, like any other operating system, Ubuntu is not immune to overheating issues. Overheating can lead to a number of problems, such as decreased performance, system crashes, and even hardware damage. Therefore, it is important to monitor temperature of your CPU and GPU regularly to prevent such issues from occurring. In this article, we will introduce you to 4 useful tools to monitor CPU and GPU temperature in Ubuntu. lm-sensors lm-sensors is a command-line tool that allows you to monitor ... Read More

PhpMyAdmin is a popular tool used by web developers to manage and administer MySQL databases. It provides a web interface to perform various tasks such as creating, modifying, and deleting databases, tables, and records. However, as with any web application, it is susceptible to security vulnerabilities if not properly secured. In this article, we'll discuss four useful tips to secure PhpMyAdmin login interface to protect your data from unauthorized access. Change Default Login Credentials The default username and password for PhpMyAdmin are "root" and "password, " respectively. This information is publicly available, and it makes it easy for hackers to ... Read More

As a Linux user, you will likely encounter situations where you need to create directories, compress files, or terminate processes. These tasks can be accomplished using three essential commands: mkdir, tar, and kill. In this article, we will discuss four useful tips that will help you master these commands and simplify your Linux experience. “mkdir” command The mkdir command is one of most commonly used commands in Linux. It allows users to create directories and subdirectories in Linux file system. In this article, we will discuss four useful tips on mkdir command in Linux. Creating Multiple Directories at Once The ... Read More

As Linux continues to gain popularity as an operating system for servers and other computing devices, need for skilled Linux administrators is on rise. One crucial skill for any Linux administrator is shell scripting. Shell scripting is process of creating programs that automate tasks in a Linux environment, making it easier and faster for administrators to manage their systems. If you are new to Linux or are looking to improve your shell scripting skills, there are several free ebooks available to help you get started. In this article, we will explore four free ebooks that are perfect for Linux newbies ... Read More

RHEL 8 (Red Hat Enterprise Linux 8) is a popular Linux-based operating system used by many organizations for their servers and workstations. In RHEL 8, IP (Internet Protocol) addresses can be set dynamically or statically. A dynamic IP address is assigned automatically by a DHCP (Dynamic Host Configuration Protocol) server, while a static IP address is manually configured by user. In this article, we will discuss three ways to set a static IP address in RHEL 8. Using Network Manager GUI The Network Manager GUI is a graphical user interface that makes it easy to manage network settings, including setting ... Read More

Linux is an incredibly powerful and versatile operating system that is widely used in computing industry. One of most important aspects of using any computer system is ability to manage files and directories. In this article, we will be discussing three ways to permanently and securely delete files and directories in Linux. Why Secure File Deletion is Important When you delete a file or directory from your computer, it does not necessarily mean that data is gone forever. In most cases, data is still present on your hard drive or storage device, but it is marked as "free space" that ... Read More

If you're a music lover who uses Fedora Linux as their primary operating system, you might be wondering how to install Spotify. Luckily, it's relatively easy to get Spotify up and running on Fedora Linux. In this article, we'll explore three different ways to install Spotify on Fedora Linux. Install Spotify Using Flatpak One of easiest ways to install Spotify on Fedora Linux is to use Flatpak. Flatpak is a packaging system that allows developers to distribute applications across different Linux distributions. Here's how to install Spotify using Flatpak − Open terminal on your Fedora Linux system. Type following command ... Read More