ANTJANUS

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Antonin Januska · Boulder, Colorado

/writing · 18 articles + 12 on AI

Writing

18 articles on engineering, tooling, and the craft of building software.

Two collections live here. The Digital Garden holds engineering, opinions, and deep dives. Demystifying Tools breaks down common command-line tools. AI writing has its own page.

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Featured

Hand-picked articles worth reading.

  1. 2026-02-23 · Digital Garden

    17 Side Projects I Built With Claude Code in Two Months

    A look at 17 side projects I built in about two months with Claude Code — from TUI apps in Rust and Go to browser games and AI agent tooling.

  2. 2022-03-11 · Digital Garden

    The Anatomy Of My Ideal React Component

    A walkthrough of my very opinionated React Component.

Popular

Articles readers keep coming back to.

  1. 2026-01-08 · Digital Garden

    Common React Hooks Antipatterns and Gotchas

    Learn about common React Hooks antipatterns and how to avoid them for better code quality.

  2. 2026-01-08 · Digital Garden

    The Simplest CSS Grids

    Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.

The whole archive

18 of 18 articles

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DateTitleCollection
2026-03-12Demystifying awk

A practical introduction to awk for printing fields, filtering rows, formatting output, and writing useful one-liners.

Demystifying Tools
2026-02-2317 Side Projects I Built With Claude Code in Two Months

A look at 17 side projects I built in about two months with Claude Code — from TUI apps in Rust and Go to browser games and AI agent tooling.

Digital Garden
2026-01-28Demystifying Git Worktrees

Learn how to work with multiple Git branches simultaneously using worktrees — a powerful feature that lets you check out different branches as separate folders while sharing Git data.

Demystifying Tools
2026-01-08Common React Hooks Antipatterns and Gotchas

Learn about common React Hooks antipatterns and how to avoid them for better code quality.

Digital Garden
2026-01-08The Simplest CSS Grids

Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.

Digital Garden
2025-08-23Demystifying ffmpeg

The basics of ffmpeg.

Demystifying Tools
2024-03-13Constants vs Enums in TypeScript

TypeScript tips and tricks.

Digital Garden
2024-03-03Build React UI Library (notes)

Notes on building a React UI library.

Digital Garden
2024-03-01Where did my blog go?

A statement on where my extensive blog has gone.

Digital Garden
2024-03-01Throwback Thursday — The Site Through Time

A look at the site through time, from its inception to now.

Digital Garden
2022-03-11The Anatomy Of My Ideal React Component

A walkthrough of my very opinionated React Component.

Digital Garden
2020-12-07Demystifying the Find command

The Find command made simple.

Demystifying Tools
2020-06-26Using Postgres FOR loop to generate data

I don't know about you but I often need a 100 of something in my database to properly test a page. Here's how to use Postgres FOR loops to generate test data quickly.

Digital Garden
2020-04-09Demystifying GREP

Cheatsheet: search for a keyword in a file.

Demystifying Tools
2020-02-17Demystifying Rsync

Rsync made simple.

Demystifying Tools
2020-02-09Demystifying the TAR command

The cheatsheet for tar.

Demystifying Tools
2018-04-18How to "grep" in PowerShell

New to PowerShell? Here's how to "grep" using built-in PowerShell utilities.

Digital Garden
2018-04-06How I Structure My JavaScript File

Check out my practices and recommendations on writing JavaScript files that I've learned through writing JavaScript for years.

Digital Garden

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Engineering, opinions, deep-dives, and everything in between.

Demystifying Tools

7 walkthroughs

Practical walkthroughs of common command-line tools and utilities.

Series

I, AI
AI short stories. 5 parts planned, 3 published: Spare Cycles, Unknowing Crowds, The Weight of Equal Parts.
Digital Garden
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Across every collection, with article counts.