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Cheatsheets

A growing collection of clean, printable developer cheatsheets. Every one is privacy-first — no cookies, no ad trackers, just the reference. Pick a topic from the sidebar, or browse below. Each sheet is also available as a PDF download.

Shell & CLI

  • Bash Shortcuts — Move, edit, and recall on the command line without the arrow keys.
  • Linux Commands — The everyday command-line toolkit — files, text, processes, and the network.
  • macOS Terminal — The macOS-specific commands — pbcopy, open, mdfind, defaults, and Homebrew.
  • Symlinks on macOS & Ubuntu — ln -s is four characters and a lifetime of footguns. Here's the part that isn't obvious.
  • tar (Archives) — Create, inspect, and extract tarballs — the flag combos, compression formats, and safe-extract habits.
  • Terminfo & TERM over SSH — Fix 'Error opening terminal: xterm-ghostty' (and kitty/alacritty) under sudo and over SSH.
  • tmux Cheat Sheet — Sessions, windows, panes, and copy mode — the whole multiplexer at a glance.

Editors

  • Vim Commands — Modes, motions, and edits — enough to stop fighting the editor.
  • VS Code Shortcuts — Command palette, multi-cursor, and navigation — keys shown for Windows/Linux.

DevOps

  • Docker — Build images, run containers, wire up Compose, and clean up after.
  • Git Ops Cheatsheet — The 20 commands you actually use, plus the 'oh no' recovery section.
  • Kubernetes (kubectl) — Inspect, apply, debug, and scale — the kubectl commands that matter.
  • Sync & Secrets CLI — rclone, rsync, Syncthing, Proton Drive CLI & Proton Pass CLI — five tools, one reference.
  • systemd — Control services and read logs with systemctl and journalctl.

Languages & Data

  • Markdown — GitHub Flavored Markdown — headings, lists, tables, links, code, and the GFM extras.
  • Python RegEx — The re module, metacharacters, and the patterns you keep re-Googling.
  • SQL Commands — Query, join, aggregate, and modify — the SQL you reach for daily.

macOS