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Fixing PipeWire Lock Issues on Arch Linux: Why Video & Audio Playback Broke The other day, I ran into a frustrating issue on my Arch Linux setup: no video would play anywhere , not in Chrome, not in Firefox, and not even locally with mpv. The files loaded, but playback simply wouldn’t start. Digging deeper revealed that the culprit wasn’t the browser or the media player at all, but PipeWire, the modern Linux audio and video server. ...

Creating a WhatsApp AI Assistant Using n8n: A Step-by-Step Guide April 2025 · Your Name or Blog Name Build your own AI-powered WhatsApp chatbot using n8n, WhatsApp Business Cloud API, and OpenAI. This guide walks you through every step—from setup to testing—with real-world error handling and solutions. Table of Contents Introduction Prerequisites Registering Your WhatsApp Business App Configuring Your Webhook in n8n Processing Incoming Messages Integrating OpenAI for Responses Sending Replies via WhatsApp Common Errors & Fixes Going Live Conclusion & Next Steps 1. Introduction Want to chat with an AI on WhatsApp? In this tutorial, you’ll learn how to build a WhatsApp AI Assistant using: ...

1. Introduction Sometimes you need to share a local application with the outside world, maybe to demo your project, test a webhook, or allow a teammate to access your development server. Normally, you’d need a public IP, port forwarding, or a cloud server. ngrok removes all that complexity by creating a secure tunnel from the internet directly to your machine, giving you a public URL instantly. 2. Prerequisites Before we begin, make sure you have: ...

Creating a WhatsApp AI Assistant Using n8n: A Step-by-Step Guide Build your own AI-powered WhatsApp chatbot using n8n, WhatsApp Business Cloud API, and OpenAI. This guide walks you through every step—from setup to testing—with real-world error handling, solutions, and an example production-ready workflow. 1. Introduction Want to chat with an AI on WhatsApp? In this tutorial, you’ll learn how to build a WhatsApp AI Assistant using: n8n (automation tool) WhatsApp Business Cloud API OpenAI (for generating intelligent replies) By the end, you’ll have a working chatbot and gain hands-on experience with APIs, webhooks, and automation. ...

Introduction A memory leak occurs when a program allocates memory dynamically (e.g., using malloc) and fails to release it using free. This leftover allocation can lead to wasted memory resources, eventually causing slowdowns or system crashes in long-running programs. Valgrind is a powerful command-line tool available on Linux systems. It helps developers detect: Memory leaks Invalid memory access Uninitialized memory usage Mismatched memory management In this guide, we’ll walk through examples in C to learn how to detect and fix memory leaks using Valgrind. ...

QEMU-KVM on Arch Linux: Running Tiny Core Linux in a Lightweight VM Virtualization is a powerful tool for developers, sysadmins, and tinkerers alike. On Linux, QEMU-KVM stands out as a robust, high-performance virtualization stack. In this blog, well walk through setting up QEMU-KVM on Arch Linux and using it to run Tiny Core Linuxa super-lightweight distro perfect for testing and experimentation. What is QEMU-KVM QEMU (Quick Emulator) is a generic and open-source machine emulator. On its own, it can emulate various hardware systems. However, when paired with **KVM (Kernel-based Virtual Machine)**a Linux kernel module for virtualizationit can run virtual machines with near-native performance. ...

Building the Linux Kernel Compiling the Linux Kernel involves multiple steps and can take some time depending on your hardware specifications. Step 1: Download the Kernel Source Code Start by visiting the Official Linux Kernel Website and downloading the latest available kernel source code. The downloaded file will be a compressed archive containing all necessary source files. Step 2: Extract the Source Code Once the download completes, extract the contents of the compressed archive using the tar command: ...

Introduction So, you’ve built a sleek website with Hugo and deployed it to GitHub Pages. Now, you want to give it a professional touch with a custom domain like yourdomain.tech instead of the default username.github.io URL. This guide walks you through the process step-by-step. Prerequisites A Hugo website hosted on GitHub Pages (public repository). A custom domain (e.g., yourdomain.tech) purchased from a registrar like Namecheap, Google Domains, etc. Basic familiarity with DNS settings and GitHub repository configurations. Step 1: Configure Your GitHub Repository First, ensure your GitHub Pages site is set up correctly: ...

Exception handling is a crucial aspect of writing robust and reliable Python code. Whether you’re a beginner or an experienced developer, getting an error, or exception, in your Python program means the entire program will crash. You don’t want this to happen in real-world programs. Instead, you want the program to detect errors, handle them, and then continue to run. In this blog, we’ll explore the fundamentals of exception handling in Python, including syntax, best practices, and advanced techniques. ...

Have you ever wanted your Python program to do multiple things at once? For example, downloading files while updating the UI, or processing data while listening for user input? That’s where multithreading comes in. In this post, we’ll explore multithreading in Python — what it is, when to use it, and how to use it with simple examples. 🧠 What is Multithreading? Multithreading is a way to run multiple threads (smaller units of a process) at the same time. It helps make your program more responsive or perform tasks in parallel, especially when tasks are I/O-bound (e.g., network calls, file reading, etc.). ...