Git
Daily commands plus the few rebase / bisect / reflog tricks worth memorizing.
Cheatsheets
Die Kommandos, die ich täglich google — eine Markdown-Seite pro Thema, copy-freundlich.
7 Einträge
Trim, compress, convert, extract — the recipes you Google every time.
Joins, window funcs, JSON, indexing, and the EXPLAIN reading skill.