Cheatsheets
Commands, correctly remembered
Practical references for everyday development - the commands a working developer actually reaches for, not an exhaustive man page. Every sheet is dated so you know how fresh it is. See also the cross-OS lookup for side-by-side Linux/macOS/Windows equivalents of common tasks.
Available offline once visited
Operating systems
Shell commands for the OS you actually work in.
Linux Cheatsheet
Everyday commands for real Linux systems - files, permissions, processes, package managers, and diagnostics, with GNU-specific flags called out.
macOS Cheatsheet
Everyday Terminal commands for macOS - BSD tool differences from Linux, Homebrew, Finder integration, and system diagnostics.
Windows (PowerShell) Cheatsheet
Everyday PowerShell commands for Windows - files, processes, services, networking, and package management with winget.
Tools
Git, containers, orchestration, and remote access.
Git Cheatsheet
The everyday Git commands a working developer actually reaches for - setup, branching, remotes, history, and undoing mistakes.
Docker Cheatsheet
Everyday Docker commands for images, containers, volumes, networks, and Compose - plus cleanup commands that actually free disk space.
kubectl Cheatsheet
Everyday kubectl commands for inspecting clusters, managing pods and deployments, and debugging - the ones you actually run day to day.
SSH Cheatsheet
Connecting, key management, config files, port forwarding, and file transfer with OpenSSH - the commands behind every remote server workflow.
Networking Cheatsheet
curl, DNS lookups, checking open ports, and ping/traceroute - with the command differences between Linux, macOS, and Windows called out.
Languages & data
Environment managers and query references.
Python Environments Cheatsheet
venv, pip, pyenv, Poetry, and uv - the commands for creating isolated Python environments and managing dependencies without breaking your system Python.
SQL Cheatsheet (PostgreSQL)
Everyday PostgreSQL queries and psql meta-commands - filtering, joins, aggregation, schema changes, indexes, and transactions.