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Blogs

Featured Entries

Jessica Brown

17 Subtle Rules of Software Engineering

List By: Miko Pawlikowski  Descriptions By: Jessica Brown Published: December 29, 2024 Software engineering is a discipline that balances technical precision, creativity, and collaboration. These 17 subtle rules provide insights to improve the quality of code, foster teamwork, and guide sustainable practices. 0. Stop Falling in Love with Your Own Code When you become too attached to your code, you may resist valuable feedback or overlook its flaws. Always prioritize the quality of the solution
Jessica Brown

📚 Recommended Programming Books to Read for Jan. 31, 2025

Reconfigurable Processor Array a Bit Sliced Parallel Computer (USA) Author(s): A. Rushton Subject: programming The Breakthrough of Parallel Computing: A Review of A. Rushton's 'Reconfigurable Processor Array a Bit Sliced Parallel Computer (USA)' In the ever-evolving world of technology, keeping up with the innovation and concepts that define the landscape can be a challenge. Yet, in his book, 'Reconfigurable Processor Array - A Bit Sliced Parallel Computer (USA)', A. Rushton provides a solid f
Jessica Brown

Why Every SysAdmin Should Understand ISO/IEC 27001:2022

In today’s digital landscape, the role of a System Administrator (SysAdmin) extends far beyond server uptime and software updates. With cyber threats evolving daily, understanding key information security standards like ISO/IEC 27001:2022 is no longer optional, it’s essential. This international standard provides a robust framework for establishing, implementing, maintaining, and continuously improving an Information Security Management System (ISMS). For SysAdmins, mastering ISO/IEC 27001 isn’t
Jessica Brown

📚 Recommended Servers Books to Read for Jan. 31, 2025

Web Server Programming Author(s): Neil Gray Subject: servers 'Web Server Programming' Explored: An Enlightening Dive into Digital Engineering As someone deeply entrenched in the world of literature, there are books that unravel their mysteries instantly and others that unfold their knowledge meticulously. Falling gleefully into the latter category is Web Server Programming by Neil Gray. In this technologically intensive era, Gray masterfully deciphers the art of web server programming, venturing
Jessica Brown

Harden and Secure Linux Servers by Level (1 - 6)

Securing a Linux server is an ongoing challenge. Every day, bad actors attempt to penetrate systems worldwide, using VPNs, IP spoofing, and other evasion tactics to obscure their origins. The source of an attack is often the least of your concerns, what matters most is implementing strong security measures to deter threats and protect your infrastructure. Hardening your servers not only makes them more resilient but also forces attackers to either move on or, ideally, abandon their efforts altog
Linux Tips

LHB Linux Digest #25.23: Redesigned Courses, Time commands, Self-host knowledge base and More

by: Abhishek Prakash Fri, 22 Aug 2025 17:58:51 +0530 You might notice something different about the Linux Handbook website. It has a fresh new look! 🎉 But it’s not just about looks. Along with the redesign, I am introducing a better and more helpful course layout. Take our Linux course, for example. It gives you all the necessary information, chapters, difficulty level, duration, etc. And when you visit a chapter, all the chapters of the course are accessible from the left sidebar. This makes
Linux Tips

Use Proxmox for Virtual Machines

by: Doron Beit-Halahmi Fri, 22 Aug 2025 14:55:01 +0530 Proxmox is a type-1 hypervisor that you install on a physical server. And then you use it to create numerous virtual machines and containers, manage them, create clusters with them, and what not. If you would like to learn virtualization or you would like to create a setup that involves using dedicated hardware for various Linux servers, Proxmox is the force to reckon with. If you are getting started with Proxmox, you are at the right plac
Linux Tips

Container Management With Podman

by: Pratham Patel Fri, 22 Aug 2025 13:09:14 +0530 📶 Difficulty level: Intermediate ⏳ Time to complete: Approx. 3 hours 📋 Prerequisite: Familiarity with Docker, containers and Linux command lineThe containers are often synonym with Docker. But Docker is not the only containerization tool out there. Red Hat's Podman is a promising tool for your container needs. The syntax is similar to Docker, so you don't have to unlearn Docker first and then learn something new. This Podman tutorial series ai
F.O.S.S

VPNs With "No Logging Policy" You Can Use on Linux

by: Sourav Rudra Fri, 22 Aug 2025 06:31:05 GMT Privacy-focused services like encrypted email, secure messaging, and VPNs are growing in importance with each passing day. We live in an era where dissent is crushed and corporations treat user data like chips on a poker table. Your browsing habits, location data, and online communications have become valuable commodities to be traded without your consent. VPNs have emerged as essential tools for reclaiming digital sovereignty, but not all VPN
Linux Tips

Learn Firewalld: Manage Linux Firewall with firewall-cmd

by: Abhishek Prakash Fri, 22 Aug 2025 11:33:54 +0530 What is firewalld? Firewalld is an open source firewall management tool that acts as a front-end tool for the Linux kernel's netfilter framework. It is a zone-based firewall system that allows for the different security configuration levels for different connection zones. While Ubuntu and Debian rely on ufw for the firewall function, firewalld is shipped by default in Fedora, CentOS, openSUSE and Red Hat. Why use firewalld? Easier managemen
F.O.S.S

FOSS Weekly #25.34: Mint 22.2 Features, FreeVPN Fiasco, Windows Update Killing SSDs, AI in LibreOffice and More

by: Abhishek Prakash Thu, 21 Aug 2025 04:32:39 GMT There are numerous popular browser-based free VPNs. FreeVPN is one such extension that was recently caught to be spying on its users. As the saying goes, if it's free, you are the product. Google Verified FreeVPN Caught Red-handed Spying on its UsersIf it is free, you are the product. Unless it is free and open source.It's FOSS NewsSourav RudraIf you have to, at least use free option from reliable sources like Proton or Mozilla. 💬 Let's see
Linux Tips

Mastering AWK as a Linux System Administrator

by: Abhishek Prakash Thu, 21 Aug 2025 09:50:26 +0530 Stop wrestling with complex shell scripts and manual log parsing. AWK is your secret weapon for instant data analysis, log processing, and system monitoring. Convert your superlong scripts into elegant one-liners to help with your actual usecases. What makes AWK special? Built into every Linux system - no installation needed Handles structured data effortlessly Perfect for log analysis, configuration processing, and report generation Bridges
F.O.S.S

TerraMaster D1 SSD Plus Review: Experience a Faster External SSD

by: Abhishek Prakash Thu, 21 Aug 2025 02:49:22 GMT Transferring large files via typical USB thumb drives is a pain. Try it with a 20 GB file and it will take an hour just for copying the files. That's why external, portable SSDs are the new normal these days, especially when we have to deal with 4K video files that go in multiple GBs. Another player in this domain is an external SSD enclosure that allows you to use your typical, internal NVMe SSD like a portable, external SSD. One of the la
Programmer's Corner

3D Layered Text: Motion and Variations

by: Amit Sheen Wed, 20 Aug 2025 13:54:52 +0000 In the previous chapter, we built a basic 3D layered text effect using nothing but HTML and CSS. It looks great and has a solid visual presence, but it’s completely static. That is about to change. In this chapter, we will explore ways to animate the effect, add transitions, and play with different variations. We will look at how motion can enhance depth, and how subtle tweaks can create a whole new vibe. 3D Layered Text Article Series
Programmer's Corner

405: Elasticsearch → Postgres Search

by: Chris Coyier Tue, 19 Aug 2025 19:15:02 +0000 Alex & Chris get into a fairly recent technological change at CodePen where we ditched our Elasticsearch implementation for just using our own Postgres database for search. Sometimes choices like this are more about team expertise, dev environment practicalities, and complexity tradeoffs. We found this change to be much better for us, which matters! For the most part search is better and faster. Postgres is not nearly as fancy and capable as
Linux Tips

RHCE Ansible EX294 Exam Preparation Course

by: Ahmed Alkabary Tue, 19 Aug 2025 17:35:01 +0530 Ansible has become a cornerstone in the realm of automation, enabling efficient management of IT infrastructure through simple, yet powerful automation. This online course is meticulously designed to equip you with the essential skills and knowledge required to excel in the RHCE Ex294 Exam, where proficiency in Ansible is a key component. By enrolling in this course, you will delve into the intricacies of Ansible, mastering playbooks, roles, m
Linux Tips

Linux for DevOps: Essential Linux Knowledge for Cloud and DevOps Engineer

by: Abdullah Tarek Tue, 19 Aug 2025 13:06:24 +0530 Welcome to the "Linux for DevOps" course! In the fast-paced world of DevOps, proficiency in Linux is not just a skill but a necessity.  Whether you are new to Linux or looking to deepen your skills, this course will guide you through essential concepts, command-line operations, and system administration tasks that form the backbone of Linux in the DevOps world. You'll start with the basics, break down the command line (it's not as scary as it s
Programmer's Corner

3D Layered Text: The Basics

by: Amit Sheen Mon, 18 Aug 2025 13:46:00 +0000 Recently, a client asked me to create a bulging text effect. These are exactly the kinds of creative challenges I live for. I explored several directions, JavaScript solutions, SVG filters, but then I remembered the concept of 3D layered text. With a bit of cleverness and some advanced CSS, I managed to get a result I’m genuinely proud of. Visually, it’s striking, and it’s also a perfect project to learn all sorts of valuable CSS animat
Linux Tips

Bash Scripting

by: Ahmed Alkabary Mon, 18 Aug 2025 15:05:34 +0530 Whether you are a beginner or seasoned Linux user, you cannot escape Bash. From school curriculum to sysadmin tasks, from setting up your homelab to working as DevOps, Bash scripting is present everywhere. It is time that you get familiar with the essentials of bash shell scripting, and this course intends to do the same. 📶 Difficulty level: Beginner ⏳ Time to complete: Approx. 3 hours 📋 Prerequisite: Absolute basics of getting around Linux t
Linux Tips

The systemd Playbook: Learn by Doing

by: Bhuwan Mishra Mon, 18 Aug 2025 14:33:58 +0530 Are you tired of theory-heavy tutorials that leave you confused when it’s time to actually manage services on a Linux system? Welcome to "systemd Playbook: Learn by Doing", a hands-on, text-based course designed to turn you into a confident systemd user through real-world scenarios and sample labs. You are not reading here, you are doing it and learning it. Whether you're a Linux beginner trying to grasp system services or a sysadmin looking to
F.O.S.S

Access Root Directory in Nautilus File Manager

by: Abhishek Prakash Mon, 18 Aug 2025 06:09:19 GMT Once upon a time, Nautilus allowed accessing the root directory from 'Other locations' option in the sidebar. This tiny but useful option has disappeared in the recent versions. But you can still access root folder in Nautilus by typing / in the address bar. Let's see it in a bit more detail in this quick tutorial for Linux beginners. Nautilus is the default file explorer in GNOME desktop environment and thus it should be applicable for Ub
Linux Tips

Kubernetes Operator

by: Sachin H R Mon, 18 Aug 2025 10:08:30 +0530 Dive deep into the world of Operators and learn how to effortlessly manage and scale your containerized applications. Whether you're a seasoned pro or just starting with Kubernetes, this course is designed to equip you with the skills needed to automate and streamline your operations. There is a sample business scenario and we shall see how to use Kubernetes Operator concept in this scenario. You'll learn to build, test and deploy Kubernetes Ope
Linux Tips

Quick Introduction to Linux Command Line

by: Ted LeRoy Mon, 18 Aug 2025 09:07:23 +0530 Linux and its famed command line is vast. But you have to start somewhere. If you are completely unfamiliar with the Linux commands, terminal and the bash shell, this micro course is for you. In an hour or two, you'll get acquainted with the most common Linux commands, learn to seek help from man pages and learn to navigate through bash shell. 📶 Difficulty level: Beginner ⏳ Time to complete: Approx. 1 hour 📋 Prerequisite: None 📹 Type: Primarily vi
Linux Tips

SSH Fundamentals

by: Abhishek Prakash Sun, 17 Aug 2025 18:23:30 +0530 SSH has become a must know tool for sysadmins and developers alike. Often, your production or test server is in a remote location and then you have to use the ssh command to connect to the remote server from your local system. And then you run and execute commands on the remote server from your local machine through the SSH connection. This is an absolute beginner's course for Linux beginners, sysadmin beginners, network admin beginners, so
Linux Tips

Learn Docker: Complete Beginner's Course

by: Abdullah Tarek Sun, 17 Aug 2025 17:06:24 +0530 Did you know that Docker dominates the containerization market with a huge share of over 80%? That's right, and as a future DevOps Engineer, you will be the one responsible for managing these Docker containers. I'll cover everything you need to know about Docker in this series to help you get started and become a Docker expert by the end. 📶 Difficulty level: Beginner ⏳ Time to complete: Approx. 8 hours 📋 Prerequisite: Basic Linux commands and
Linux Tips

File Management Commands in Linux

by: Abhishek Prakash Sun, 17 Aug 2025 12:20:49 +0530 Once you have a little bit of idea about the terminal, Linux command structure, path and directory hierarchy system, you should know about handling files in Linux. As a Linux user, you have to deal with all kinds of files and all kinds of file operations. You should know how to display the contents of files, create new files, change their properties. You should also know how to look for files and edit them. In this section of Linux Handbook,
Linux Tips

Introduction to Flatpak

by: Sagar Sharma Sun, 17 Aug 2025 09:54:02 +0530 I have used Flatpak packages since I was introduced to them. The reason? They solve one of the core problems every Linux desktop user faces: managing packages on Linux. Yes, I'm aware of the fact that there are default package managers such as apt on Debian-based distros, pacman on Arch and yum on RHEL-based distros. For the most part, these package managers do a great job (for the most part - I'm repeating again). When you change your Linux d

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