Misc

Why I swapped GNU stow's symlink farm for chezmoi: one command to bootstrap a Mac with Homebrew packages and macOS settings, a small daily sync loop, and agent skills shared between Claude Code and Codex.

Mirroring a static Hugo blog onto ATProto with standard.site and Sequoia, plus the GitHub Actions wiring that republishes the records on every push without any manual steps.

Build multi-level rate limiting with Redis sorted sets and Lua. Enforce global and category-specific limits with ZREMRANGEBYSCORE and ZCARD commands.

Learn variable indirection in Bash with ${!var} syntax. Build context-aware configs, function dispatch, and dynamic variable name resolution.

Build a link blog without a backend using Hugo and markdown. Track reading, articles, and activities with yearly detail pages and RSS filtering.

Prevent multiple script instances with file locking. Use flock in Bash, fcntl in Python, and syscall.Flock in Go for single-instance processes.

Complete SSH setup guide: key pairs, authorized_keys, sshd_config, ssh_config, known_hosts, agent forwarding, and hardening for secure remote access.

Master Docker mount types: volumes, bind mounts, tmpfs, and build cache. Clear syntax comparison between -v and --mount options with docker-compose.

Automate environment variables per directory with direnv. Load .envrc files on entry, unload on exit. Integrate with Python venv and uv workflow.

Deep dive into event-driven architecture patterns. Learn publish-subscribe, CQRS, outbox pattern, eventual consistency, and handling microservice coupling.

Master Bash namerefs with declare -n to create dynamic variable references. Build generic functions for arrays and associative arrays without eval.

How this blog is built: Hugo static site generator, GitHub Actions deployment, Cloudflare caching, and R2 storage. Simple, stable, and cost-free.

Complete guide to Bash redirection. Master stdout, stderr, pipes, tee, file descriptors, and shorthand syntax with practical examples for every case.

Make raw HTTP requests with Bash's /dev/tcp file descriptor. Build health check scripts without curl or wget using TCP socket connections.

Replace mkdir, cp, and chmod with a single install command. Copy files, create directories, and set permissions in one step with GNU coreutils.