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David Cao

David is a Cloud & DevOps Enthusiast. He has years of experience as a Linux engineer. He had working experience in AMD, EMC. He likes Linux, Python, bash, and more. He is a technical blogger and a Software Engineer. He enjoys sharing his learning and contributing to open-source.

Remember those early days of using Linux? It felt like the Wild West of computers! You could customize everything, which was awesome, but there was always this nagging worry in the back of your mind. What if you accidentally downloaded something bad with all those cool-sounding programs? Every time you clicked “install,” it felt like …

Read More about From Vulnerable to Secure: My Journey to Block Malicious Packages on Linux

Remember those days when fixing stuff on your Linux computer involved typing out the same commands over and over again? It felt endless! Then, I learned about these things called “for loops” in Bash scripting, and let me tell you, they were a lifesaver. Now, I can handle those repetitive tasks in just one line …

Read More about From Repetitive Tasks to Looping Magic: My Bash for Loop Journey

In my journey with RPM-based Linux distributions, I’ve encountered numerous scenarios where understanding the contents of an RPM package became essential. Whether it’s for troubleshooting issues or gaining insights into system modifications, exploring RPM packages has been a valuable skill. Let me share with you my comprehensive guide on listing files within RPM packages. Getting …

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OpenAI Prepares to Shake Up Search OpenAI, known for its innovative AI models, is reportedly set to announce a new search product, marking a significant shift in the search landscape. This move positions them as a direct competitor to Google, the current king of online information retrieval. The announcement, strategically timed for just before Google’s …

Read More about OpenAI’s AI Search Engine: A Challenge to Google’s Dominance?

1. Tesla Quietly Removes All U.S. Job Postings Tesla’s recent decision to remove all U.S. job postings from its website has raised questions. The move comes amid reports of layoffs and hiring freezes, suggesting that the electric vehicle giant may be facing financial challenges or looking to restructure its workforce. This development is particularly noteworthy …

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In the realm of Linux system security, controlling which applications can execute is a critical aspect of maintaining a secure environment. fapolicyd is a powerful tool designed for Red Hat Enterprise Linux (RHEL) that allows administrators to define and enforce policies governing application execution. This article delves into the capabilities of fapolicyd, its components, and …

Read More about Deploying and Using fapolicy on RHEL

DNS (Domain Name System) is the phonebook of the internet, translating human-readable domain names (like google.com) into machine-readable IP addresses. When DNS malfunctions, you might experience issues like websites not loading or displaying incorrect content. Here’s a guide to efficiently troubleshoot DNS issues on Linux systems: 1. Case One: DNS Resolution Failure Problem Description: Some …

Read More about DNS Troubleshooting Guide in Linux Systems: How to Efficiently Address These Challenging Scenarios?

In recent years, large language models (LLMs) have transformed the artificial intelligence landscape, enabling groundbreaking applications in natural language processing, machine learning, and more. However, developing and deploying LLM-powered applications can be complex and time-consuming. This is where Langchain comes in – a game-changing framework that simplifies every stage of the LLM application lifecycle. What …

Read More about Introducing Langchain: Revolutionizing Large Language Model Applications

As someone who has been involved in web development and digital marketing for over a decade, I have had the opportunity to work with a wide array of hosting platforms. Over the years, I have come to realize that finding the right hosting solution is crucial for the success of any website. It’s not just …

Read More about The Six Key Features That Transform My WordPress Hosting Experience