These recipes ran against a live two-node k3s cluster (Kubernetes 1.35) with jq 1.8.2, including a deliberately broken deployment so the failure output is real. Swap the namespaces for yours.

An ontology earns its keep only when a team uses it. A software ontology is a shared model of a domain: its entities, their attributes, and their relationships, written so people and code agree on what each term means. This guide assumes the model already exists. The goal is to put it to work: in workflows, design sessions, database schemas, and on every screen where a teammate looks something up. Pick the section that matches the task in front of you. The command examples assume PostgreSQL and psql, but the practice maps to any engine that supports comments and constraints. The examples use the Subscription Billing context from the creation guide, so the terms line up across both articles.

A software ontology is an explicit, agreed-upon domain model, including concepts, meanings, and relationships. In DDD, it covers ubiquitous language, bounded contexts, and aggregates. This guide creates one.

Goal

Create a software ontology for a domain: a model that identifies key concepts, defines them once, classifies (entity, value object, or aggregate), and maps relationships and boundaries. The final artifact is an agreed-upon model reflected in the code.

Goal

By the end you will have used DNF to install a package, update your system, remove a package, and search for packages. You will know how to confirm each step and fix the most common failures.

Goal

By the end, you’ll have used APT to install, update, remove, and search for packages, knowing how to confirm each step and fix common failures.

Success criteria: You can run apt install, apt update, apt upgrade, apt remove, and apt search from the command line and interpret the output. You can confirm a package is installed and working.

What Are GitHub Private Mirrors?

A private mirror is a private copy of a public repository within your organization. You develop and review there; when ready, push approved work to a public fork in your org, then open a pull request to the upstream project. The mirror remains private, with only synced content leaving your control.

In this tutorial, you’ll create a complete event plan for a small gathering using my method. You’ll learn to define a focused theme, structure short segments, and add fun elements that keep people engaged. By the end, you’ll have a practical plan ready to execute.

I’m a software developer with Aphantasia and ADHD, so my approach is specific. This is my approach to learning. I’m certain your approach will differ.

Here’s my mind on learning:

Learning Principles

I’m a big fan of principles.

I follow these principles to guide my learning:

What is sqlite-utils?

sqlite-utils is a command-line tool that provides a simple interface for managing SQLite databases. It’s particularly useful for:

• Creating and managing SQLite databases
• Performing CRUD operations
• Working with JSON data
• Managing database schemas
• Data import and export
• Schema migrations

Prerequisites

Before you begin, ensure you have:

What is Replit?

Replit is a comprehensive web-based development platform that provides:

• A full-featured IDE in your browser
• Built-in hosting capabilities
• Collaborative development tools
• Educational features
• Code embedding options
• AI-powered coding assistance
• Multiplayer development environment
• Cloud-based deployment

Unlike traditional IDEs, Replit requires no local installation and works across all devices with a web browser.

Basic Search Operators

Exact Phrase Search

Use double quotes to find exact phrases:

"google fu"

Try it out: https://www.google.com/search?q=“google+fu”

This ensures Google only returns pages containing the exact phrase “google fu”.

Excluding Terms

Use the minus sign (-) to exclude specific terms from your search:

Prerequisites

Before you begin, ensure you have:

• macOS (this guide is for macOS, but YMMV on other operating systems)
• Git installed
• SSH installed
• Access to your GitHub accounts
• Terminal access
• Basic understanding of SSH and Git concepts

Setting Up Multiple GitHub Accounts

1. Generate SSH Keys

Use the following shell function to generate and configure SSH keys for each GitHub account:

Why Switch from Evernote to Joplin?

My Experience with Evernote

I used Evernote for just shy of three years. I used it briefly when it came out, then quickly pivoted to using handwritten note software. I was tired of maintaining my note app, so I switched to OneNote for a while. OneNote isn’t a complete disaster, but a multitude of bugs surrounding Microsoft’s ecosystem finally pissed me off too much, so I switched to Evernote.

Email Management Principles

1. Filter Everything

☕

I’m a zero inboxer who uses filters to achieve inbox nirvana. Create filters with clear prefixes:

• MOVE. Automatically move messages to specific folders
• DELETE. Remove unwanted messages automatically

2. Minimalist Folder Structure

📂

Navigate to a web page and select text.

Paste the URL in your web browser, and you should see the highlighted text.

Notice the browser highlights the text.

The generated URL looks like this.

https://en.wikipedia.org/wiki/The_Hitchhiker%27s_Guide_to_the_Galaxy#42,_or_The_Answer_to_the_Ultimate_Question_of_Life,_The_Universe,_and_Everything:~:text=In%20the%20works%2C%20the%20number%2042%20is%20given%20as%20The%20Answer%20to%20the%20Ultimate%20Question%20of%20Life%2C%20The%20Universe%2C%20and%20Everything

Prerequisites

Before you begin, ensure you have:

• macOS installed
• Hyper Terminal installed
• Basic familiarity with Automator

Creating the Quick Action

1. Open Automator

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