Blogs

In the journey of software development, visual aids like diagrams play a crucial role. They help in understanding, designing, documenting, and communicating different aspects of a system among team members and stakeholders. Let’s dive into some of the most commonly used diagrams in software development. 1. Unified Modeling Language (UML) Diagrams Unified Modeling Language (UML) is a standard language which is not about coding but about visualizing. It helps to model software, systems, and business processes....

Introduction: The SOLID principles are a cornerstone for designing robust, maintainable, and scalable systems. These principles, introduced by Robert C. Martin, provide a foundation for good software design. In this article, we’ll break down each principle with examples, making it easy for beginners to grasp these essential concepts. 1. Single Responsibility Principle (SRP): The Single Responsibility Principle states that a class should have only one reason to change, meaning it should have only one job....

The essential commands for creating, modifying, and deleting user accounts, as well as managing user privileges and groups. User Management: Creating a new user: sudo useradd username Set the user’s home directory and shell: sudo useradd -d /home/username -s /bin/bash username Setting a password for the user: sudo passwd username Deleting a user: sudo userdel -r username Modifying user properties: sudo usermod -g newgroup -aG group1,group2 -d /new/home/directory -s /bin/newshell username Listing all users:...

Expo is a powerful toolset for quickly building and deploying mobile applications using React Native. Expo CLI, the command-line interface for Expo, provides developers with a wide array of commands to manage and streamline their mobile development workflow. In this article, we’ll explore the fundamental Expo CLI commands and their functionalities. Installation Before diving into Expo CLI, it’s essential to have Node.js installed on your machine. You can download and install Node....

GitHub CLI, or gh, is a powerful tool that brings the full functionality of GitHub to your command line. Whether you’re managing repositories, creating issues, or reviewing pull requests, gh streamlines your workflow by enabling you to interact with GitHub directly from your terminal. In this guide, we’ll walk through the installation process on Ubuntu and provide a cheat sheet of commonly used commands. Installation on Ubuntu Using APT (Advanced Package Tool) Open your terminal and follow these steps:...

In the world of multimedia, videos are a valuable and versatile form of content. However, you may find yourself needing to break down a long video into smaller, more manageable segments for various purposes. This could be for editing, sharing, or simply to make the content more digestible. To automate this process, you can use FFmpeg, a powerful multimedia framework, along with a Python script. In this blog post, we’ll guide you through creating a Python script that segments a video and saves the segments in a dedicated folder....

Introduction: Virtualization has become an essential tool for developers, enabling them to create isolated environments to test software and configurations. One such tool that simplifies virtual machine (VM) management is Multipass. Multipass provides a straightforward way to create, manage, and launch lightweight virtual machines on your local system. In this guide, we’ll walk you through the process of installing Multipass and demonstrate some example commands to help you get started....

Developers often work on projects that require specific programming languages and versions. Managing these different environments can be challenging, but with the right tools, you can streamline the process and improve your workflow. In this blog post, we’ll walk you through setting up four important version management tools: nvm, pyenv with virtualenv, jenv, and Rust on an Ubuntu system. Table of Contents Introduction Installing nvm (Node Version Manager) Setting Up pyenv with virtualenv (Python Version Manager) Configuring jenv (Java Environment Manager) Managing Rust Versions with Rustup Conclusion Introduction Setting up a development environment involves managing different versions of programming languages to ensure compatibility with various projects....

Bash script to export all data from a MySQL/MariaDB database to CSV files: #!/bin/bash DB_USER="your_username" DB_PASS="your_password" DB_NAME="your_database" TABLES=$(mysql -u$DB_USER -p$DB_PASS -e "USE $DB_NAME; SHOW TABLES;" | grep -v "Tables_in") for TABLE in $TABLES; do mysql -u$DB_USER -p$DB_PASS -e "USE $DB_NAME; SELECT * FROM $TABLE;" | sed 's/\t/","/g;s/^/"/;s/$/"/' > "$TABLE.csv" done echo "CSV export complete!" Replace your_username, your_password, and your_database with your actual database credentials and database name. Save the script to a file, make it executable with chmod +x scriptname....

Step 1: Update Your System: Begin by ensuring your Ubuntu system is up to date. In the terminal, execute the following commands: sudo apt update sudo apt upgrade Step 2: Installing OpenJDK: Ubuntu’s default repositories offer convenient access to OpenJDK packages. For this guide, we’ll focus on OpenJDK 11, an LTS version. Install it using the package manager: sudo apt install openjdk-11-jdk Step 3: Verify the Installation: Once installation is complete, verify that Java is successfully installed by checking the version:...