Full Stack Staff Eng.ANTJANUS

Antonin Januska
Collected writing

18 articles on file
2018 – 2026

Submissions log

Writing

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

Two collections: the Digital Garden [DG] for engineering, opinions and deep-dives, and Demystifying Tools [DT] for practical command-line walkthroughs. AI writing and the I, AI stories live in the AI section.

Editor's picks

Featured

  1. ★17 Side Projects I Built With Claude Code in Two Months2026
  2. ★I Built an AI-Friendly UI Pattern Library2026

Popular

  1. ↗Common React Hooks Antipatterns and Gotchas2026
  2. ↗The Simplest CSS Grids2026

The archive, by year

All 17 entries on file.

2026

  1. [DT]Demystifying awk03-12A practical introduction to awk for printing fields, filtering rows, formatting output, and writing useful one-liners.
  2. [DG]17 Side Projects I Built With Claude Code in Two Months02-23A 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.
  3. [DT]Demystifying Git Worktrees01-28Learn 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.
  4. [DG]Common React Hooks Antipatterns and Gotchas01-08Learn about common React Hooks antipatterns and how to avoid them for better code quality.
  5. [DG]The Simplest CSS Grids01-08Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.

2025

  1. [DT]Demystifying ffmpeg08-23The basics of ffmpeg

2024

  1. [DG]Constants vs Enums in TypeScript03-13TypeScript tips and tricks
  2. [DG]Build React UI Library (notes)03-03Notes on building a React UI library.
  3. [DG]Where did my blog go?03-01A statement on where my extensive blog has gone.
  4. [DG]Throwback Thursday -- The Site Through Time03-01A look at the site through time, from its inception to now.

2020

  1. [DT]Demystifying the Find command12-07The Find command made simple
  2. [DG]Using Postgres FOR loop to generate data06-26I 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.
  3. [DT]Demystifying GREP04-09Cheatsheet: search for a keyword in a file
  4. [DT]Demystifying Rsync02-17Rsync made simple
  5. [DT]Demystifying the TAR command02-09The cheatsheet for tar

2018

  1. [DG]How to "grep" in PowerShell04-18New to PowerShell? Here's how to "grep" using built-in PowerShell utilities.
  2. [DG]How I Structure My JavaScript File04-06Check out my practices and recommendations on writing JavaScript files that I've learned through writing JavaScript for years.

Older Dev.to pieces (2017–2023) are being retyped; see Where did my blog go?

Demystifying Tools

Practical walkthroughs of common command-line tools and utilities.

Tool 012026-03-12

Demystifying awk

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

 Tool 022026-01-28

Demystifying Git Worktrees

Work with multiple Git branches simultaneously as separate folders while sharing Git data.

 Tool 032025-08-23

Demystifying ffmpeg

The basics of ffmpeg

 Tool 042020-12-07

Demystifying the Find command

The Find command made simple

 Tool 052020-04-09

Demystifying GREP

Cheatsheet: search for a keyword in a file

 Tool 062020-02-17

Demystifying Rsync

Rsync made simple

 Tool 072020-02-09

Demystifying the TAR command

The cheatsheet for tar

Series

I, AI

AI short stories, 5 parts, 3 published. Every published part is original work, typed by hand without AI assistance.

Read the series →