Author: Rahul

Adding and removing software repositories in Fedora using DNF is a simple yet essential task for managing software on your system. Repositories are like online libraries where Fedora gets its software packages. By adding a repository, you give Fedora access to more software. Conversely, removing a repository can help keep your system clean and organized. This guide will walk you through the basic steps to add or remove a repository using DNF, Fedora’s default package manager. Whether you’re a beginner or just need a quick refresher, you’ll find these instructions straightforward and easy to follow. Adding Repositories Manually To add…

MySQL is a widely-used open-source relational database management system (RDBMS) that powers countless web applications and services. By default, MySQL stores its data in a predefined directory, which may not always be suitable for your requirements. For instance, you might want to move the data directory to another location for better performance, security, or to utilize a separate disk or partition. In this comprehensive guide, we will walk you through the process of changing the default MySQL data directory on Linux systems, ensuring a smooth transition with minimal downtime. Step 1: Preparing the New Data Directory The first step is…

Laravel is a popular PHP framework used for building web applications. It has many great features, but sometimes developers face problems. One common problem is the error: ‘laravel.log could not be opened’. This guide will help you fix this error step by step. The Problem The ‘laravel.log could not be opened’ error means Laravel cannot write to the log file. This could be due to several reasons: Wrong file permissions Incorrect file paths Server settings If Laravel can’t write to the log file, it can make finding and fixing other errors difficult. So, it’s important to solve this problem quickly.…

cURL, short for “Client for URLs”, is an open-source software project that provides a library (libcurl) and a command-line tool (curl) for transferring data using various network protocols. While it’s commonly used to interact with HTTP and HTTPS, it can also handle SMTP, which is the standard protocol for sending emails on the internet. In this guide, we’ll take you through the process of using cURL to send emails. What You Will Need: A Unix-like operating system or Windows system with cURL installed. Access to an SMTP server. If you’re unsure whether you have cURL installed, you can check by…

In the realm of Linux, ‘crontab’ is a term you may come across fairly often. This utility, available on Unix-like operating systems, is used to schedule tasks that are automatically executed at predefined times and intervals. This is highly beneficial for administrators and power users, allowing them to automate various system tasks. Crontab files are edited using a text editor. Often, the default editor might be one you’re not comfortable with, such as vi. However, the good news is that you can change this default editor to one of your preference, like nano or emacs. In this article, we’ll walk…

As we navigate through the world of Unix-like operating systems, we come across different shell environments, each with its unique features and capabilities. Two commonly used shell environments are Bash (Bourne Again Shell) and Zsh (Z Shell). In this article, we’ll explore these two shells in-depth, highlighting their differences, and trying to understand which might be better suited for different scenarios. What is a Shell? Before we delve into the differences, let’s briefly define what a shell is. A shell is an interface that allows users to interact with the operating system. It can be graphical (GUI) or command-line-based (CLI).…

sudo and su are two important commands in Unix-based systems like Linux that let you do administrative tasks. Although they seem similar, the commands sudo -i and sudo su – have key differences. To understand these differences, we first need to look at what sudo and su are and how they work. Then, we’ll explain sudo -i and sudo su – and highlight their differences. What are sudo and su? In Unix and Unix-like systems, sudo (short for “superuser do”) lets users run programs with the security privileges of another user (usually the superuser or root). Its main purpose is…

Linux is a popular open-source operating system that offers many tools to manage, compress, and decompress files. Compressed files help save storage space and make transferring data faster. They are very common in the Linux world. This guide will show you how to extract different types of compressed files in Linux. We will cover formats like Zip, Gz, Tar, Bz2, 7z, Xz, and Rar. 1. Unpacking ZIP Files ZIP files are very common. To work with ZIP files in Linux, you need the unzip command. If it’s not already on your system, you can install it. For example, on Ubuntu,…

Ubuntu, a popular open-source operating system based on Debian, offers a variety of customization options to suit your needs. One of these is the ability to change your screen’s resolution. The screen resolution determines how much information can be displayed on your screen. Higher resolutions mean more details and typically a sharper image, but it also means that items on the screen appear smaller. This guide will take you through the steps of changing the default screen resolution in Ubuntu. Change the Screen Resolution in Ubuntu A. Quick Instructions Open “Settings” Select “Displays” in the left sidebar Select the preferred…

Scripting languages are very important for system administration, and Bash (Bourne-Again SHell) is one of the most famous and widely used ones. Bash is a key part of Unix and Linux systems. It helps administrators and developers to interact with the system, automate tasks, manage files, and control processes. Bash is very powerful because of its special characters. These characters look simple but have unique functions that can make a Bash script much more powerful. They let you do complex things like chaining commands, redirecting input and output, running commands in the background, and more, all with just a few…