Cheat sheet
42 entries match these filters
- 0076 jq recipes: 23 one-liners for JSON on the command line A runnable collection of jq filters for everyday JSON work: pick fields, filter with select, reshape, sort, count, group, pass shell variables,… Intermediate · Cheat sheet · Linux, macOS, Windows Script Command-line tools · jq & JSON on the command line 15 Oct 2026
- 0077 SQL cheat sheet: a runnable reference for everyday queries One SQL file that builds a tiny database and demonstrates filtering, sorting, grouping, joins, CASE, CTEs, window functions, safe updates and indexes.… Beginner · Cheat sheet · Any system Script Joins · Queries 15 Oct 2026
- 0082 HTTP status codes: the common ones and what to do A quick reference to the HTTP status codes you will meet most often, what each one means, and the first thing to… Beginner · Cheat sheet · Any system Article References · Status codes 15 Oct 2026
- 0091 CSS selectors and specificity reference The selectors you will use every day, how the browser decides which rule wins when several match, and practical ways to keep… Intermediate · Cheat sheet · Browser Article References · Selectors & specificity 15 Oct 2026
- 0037 Git cheat sheet The Git commands you reach for most, grouped by task and using the modern switch and restore forms. Copy, paste, and replace… Beginner · Cheat sheet · Any system Article Git 15 Oct 2026
- 0044 A starter set of Git aliases Short names for the Git commands you type all day, such as a one-line status, a graph log, and a safe force… Beginner · Cheat sheet · Linux, macOS, Windows Script Git tools 15 Oct 2026
- 0057 Shell cheat sheet: everyday commands A quick reference for moving around, managing files, viewing and searching text, checking processes and disk space in bash and zsh, with… Beginner · Cheat sheet · Linux, macOS Article Basics · Command-line tools 15 Oct 2026
- 0058 Safe bash script template with set ‑euo pipefail and trap A starting point for bash scripts that stops on errors, rejects unset variables, cleans up temp files on exit and parses options.… Intermediate · Cheat sheet · Linux, macOS Script Shell scripting 15 Oct 2026
- 0017 JavaScript array methods cheat sheet: map, filter, reduce and friends A quick reference for the array methods you use every day, with what each one returns and whether it changes the original… Beginner · Cheat sheet · Any system Article Basics 15 Oct 2026
- 0025 Regular expressions cheat sheet (JavaScript flavor) The regex syntax you actually use, from character classes and quantifiers to groups, lookarounds and flags, with the JavaScript methods that apply… Beginner · Cheat sheet · Any system Article Basics · Basics 15 Oct 2026