巧匠Developer Cheatsheet

Developer Cheatsheet

A collection of 192+ command cheatsheets covering Docker, Kubernetes, Git, Linux, Nginx, MySQL, Python, JavaScript and more. Find fast, copy directly.

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192Cheatsheets
1,164Groups
7,342Commands
12Categories

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AI CLI
AI Prompts
Version Control
Web Services
Databases
Reference
Config Formats
Shortcuts
Containers & Orchestration
SysOps
Languages
Dev Tools

Original Guides View all guides →

Cheatsheets answer "how to write the command"; guides answer "what to do when things break" — original long-form troubleshooting with copy-ready commands.

Web Services

HTTP Caching in Practice: Configuring Cache-Control and ETag Correctly

Misconfigured caching ends one of two ways: users never see updates, or origin traffic explodes. This guide covers the split between freshness and validation caching, the hashed-asset vs HTML strategy divide, plus ready-to-use Nginx config and verification commands.

8 min readConfig Formats

YAML Gotchas: Type Coercion, Indentation and Multiline Strings

YAML files that "look right but run wrong" usually fail in three places: silently coerced scalars, misplaced indentation, and ambiguous multiline strings. This guide dissects each trap with detection methods and a toolchain.

8 min readSysOps

Bash Script Safety: set -euo pipefail and trap for Trustworthy Scripts

A Bash script that "finishes" is not a script that "worked": failed commands do not stop it, empty variables pass silently, and pipes hide upstream crashes. This guide fixes all of them with a copy-ready skeleton (set -euo pipefail + trap + quoting discipline).

7 min readDev Tools

VSCode Remote Development: Remote-SSH Setup and Connection Debugging

A weak laptop, code on an intranet server, GPUs in the cluster — Remote-SSH keeps the UI local while code and terminal run remotely, feeling native. This guide covers setup, passwordless auth, common connection failures and experience tuning.

7 min read

Popular Tags

aicliagentFrontendCoding AgentlinuxShortcutspromptPromptsjavascripthttpgitEditorcsssqlapihtmlProgrammingshortcutsdockerPortsTerminalText Processingshell

SysOps

41 cheatsheets
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Linux Troubleshooting Cheatsheet - System Fault Diagnosis Command Reference

One-page Linux troubleshooting reference covering CPU diagnosis, memory analysis, disk I/O, network troubleshooting, and process management. Quick find, direct copy.

linuxTroubleshootingProcesses
4 groups20 commands

Vim Cheatsheet - Editor Command Reference

One-page Vim reference covering cursor movement, text editing, search and replace, visual mode, and save/exit operations. Quick find, direct copy.

vimEditorlinux
4 groups21 commands

Systemd Cheatsheet - Systemd Service Management Command Reference

One-page Systemd quick reference with 47+ common commands across 7 grouped sections (systemd, systemctl, journalctl). Quick lookup, copy and run.

systemdsystemctljournalctl
7 groups47 commands

Cron Cheatsheet - Cron Expression & Task Scheduling Reference

One-page Cron quick reference with 43+ common commands across 7 grouped sections (cron, crontab, linux). Quick lookup, copy and run.

croncrontabScheduled Tasks
7 groups43 commands

CI/CD Commands Cheatsheet - CI/CD Pipeline Debugging Reference

One-page CI/CD quick reference with 33+ common commands across 6 grouped sections (cicd, github-actions, gitlab-ci, jenkins). Quick lookup, copy and run.

cicdgithub-actionsgitlab-ci
6 groups33 commands

MQ Commands Cheatsheet - Kafka/RabbitMQ/RocketMQ Reference

One-page MQ quick reference with 32+ common commands across 6 grouped sections (mq, kafka, rabbitmq, rocketmq). Quick lookup, copy and run.

mqkafkarabbitmq
6 groups32 commands

Web Services

13 cheatsheets
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curl / wget Cheatsheet - Command-line File Download & HTTP Requests

One-page curl & wget reference: GET/POST requests, headers & cookies, resumable download, proxy auth and debugging, with a side-by-side comparison. Quick lookup, copy directly.

curlwgetDownload
7 groups34 commands

Nginx Cheatsheet - Nginx Configuration & Command Reference

One-page Nginx reference covering config testing with nginx -t/-s reload, location matching priority, proxy_pass reverse proxy snippets, and access/error log troubleshooting. Quick reference, copy directly.

nginxReverse Proxylocation
4 groups19 commands

curl Cheatsheet - curl HTTP Debugging Command Reference

One-page curl HTTP debugging reference covering GET/POST basics, -v/-I/-w for detailed debugging, -x proxy & timeout, -u/-F/-o for auth and upload. Quick reference, copy directly.

curlhttpDebugging
4 groups22 commands

HTML Cheatsheet - HTML Tags & Attributes Reference

One-page HTML quick reference with 52+ common commands across 7 grouped sections (html). Quick lookup, copy and run.

htmlFrontendWeb Pages
7 groups52 commands

CSS3 Cheatsheet - CSS3 Properties & Layout Reference

One-page CSS3 quick reference with 59+ common commands across 8 grouped sections (css). Quick lookup, copy and run.

cssFrontendStyling
7 groups47 commands

Emmet Cheatsheet - Emmet Abbreviation & Syntax Reference

One-page Emmet quick reference with 39+ common commands across 4 grouped sections (emmet, html, css). Quick lookup, copy and run.

emmethtmlcss
4 groups39 commands

Databases

9 cheatsheets
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SQL Cheatsheet - Common Query Syntax & Examples

One-page SQL reference: SELECT, JOIN, aggregation, subqueries, window functions, transactions and DDL, with runnable examples. Quick lookup, copy directly.

sqldatabaseQuery
7 groups35 commands

MySQL Cheatsheet - MySQL Command Reference

One-page MySQL command reference covering database & table management, CRUD operations, index optimization, user privileges, backup & recovery, and replication. Quick lookup, copy and paste.

mysqlDatabasesql
6 groups37 commands

PostgreSQL Cheatsheet - PostgreSQL Command Reference

One-page PostgreSQL command reference covering connection & role management, database & table operations, query analysis, lock & transaction troubleshooting, backup & recovery, and streaming replication. Quick lookup, copy and paste.

postgresqlpostgresDatabase
6 groups37 commands

Redis Cheatsheet - Redis Command Reference

One-page Redis command reference covering string & data structure operations, key space management, persistence configuration, memory troubleshooting, slow query monitoring, and cluster & replication. Quick lookup, copy and paste.

redisCachingnosql
6 groups43 commands

MongoDB Cheatsheet - MongoDB Command Reference

One-page MongoDB quick reference with 43+ common commands across 6 grouped sections (mongodb, nosql). Quick lookup, copy and run.

mongodbnosqlDatabase
6 groups43 commands

Neo4j Cypher Cheatsheet - Neo4j Graph Database Command Reference

One-page Neo4j Cypher quick reference with 40+ common commands across 6 grouped sections (neo4j, cypher). Quick lookup, copy and run.

neo4jGraph Databasescypher
6 groups40 commands

Reference

16 cheatsheets
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Regex Cheatsheet - Common Patterns & Syntax Reference

One-page Regex reference covering character classes, anchors, quantifiers, groups, lookahead/lookbehind, greedy vs lazy matching, plus practical patterns for email, URL and phone. Quick lookup, copy directly.

regexRegexpattern
7 groups48 commands

HTTP Methods Cheatsheet - REST/HTTP Verbs & Idempotency

One-page HTTP methods & REST semantics: GET/POST/PUT/PATCH/DELETE verbs, idempotency, safe methods, status-code pairing and common misuses. Pairs with the HTTP Status Codes sheet for API design & debugging. Quick lookup, copy directly.

httpMethodsrest
5 groups27 commands

Regular Expressions Cheatsheet - Regex Syntax Reference

One-page regex syntax reference covering character classes, quantifiers, anchors, groups & captures, lookahead/lookbehind, common patterns, and flags. For grep/sed/awk/JavaScript/Python. Quick lookup, copy and paste.

RegexregexText Processing
6 groups40 commands

HTTP Status Codes Cheatsheet - HTTP Response Status Code Reference

One-page HTTP status code reference covering 1xx-5xx with meanings, common causes and troubleshooting scenarios (http, nginx, rest). Quick lookup for API debugging.

httpStatus Codesnginx
5 groups38 commands

Markdown Cheatsheet - Markdown Syntax Reference

One-page Markdown syntax reference covering headings, text formatting, links & images, lists, code blocks, tables, blockquotes, and GFM extensions. For writing docs and READMEs. Quick lookup, copy and paste.

markdownDocumentationSyntax
6 groups31 commands

LaTeX Cheatsheet - LaTeX Academic Typesetting Reference

One-page LaTeX quick reference with 45+ common commands across 7 grouped sections (latex). Quick lookup, copy and run.

latexTypesettingAcademic
7 groups45 commands

AI CLI

27 cheatsheets
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Hermes Agent CLI Cheatsheet - Nous Terminal Multi-Backend AI Agent

One-page Hermes Agent (Nous Research open-source, model-agnostic terminal AI agent) reference covering install, model & tool config, gateway, and setup wizard. Includes hermes, hermes model, hermes tools, hermes config set, hermes gateway. Copy-ready.

hermeshermes-agentnous
3 groups15 commands

Kilo Code CLI Cheatsheet - Terminal Open-source Coding Agent

One-page Kilo Code CLI (terminal AI coding agent, same engine as the IDE extensions) reference covering install, interactive & one-off tasks, and model integrations. Includes kilo, kilo run, kilo --mode, kilo --auto, kilo auth, kilo mcp. Copy-ready.

kilokilo-codekilocode
3 groups16 commands

Pi CLI Cheatsheet - earendil Terminal Multi-Model Coding Agent

One-page Pi (earendil-works multi-model terminal coding agent) reference covering install, interactive sessions, headless mode, and session/model management. Includes pi, pi -c, pi -p, pi @file, /login, /model. Copy-ready.

pipi-coding-agentearendil
4 groups23 commands

Kimi Code CLI Cheatsheet - Moonshot Terminal AI Coding Agent

One-page Kimi Code CLI (Moonshot AI terminal AI coding agent, wired to Kimi models) reference covering install, interactive & single instructions, and sessions & models. Includes kimi, kimi -p, kimi -C, /login, /init, /model. Copy-ready.

kimikimi-codemoonshot
3 groups14 commands

Grok CLI Cheatsheet - xAI Grok Build Terminal Coding Agent

One-page Grok CLI (xAI Grok Build terminal AI coding agent) reference covering install, interactive sessions, and headless mode. Includes grok, grok -p, grok inspect, XAI_API_KEY, /model. Copy-ready.

grokgrok-clixai
3 groups11 commands

Warp Agent CLI Cheatsheet - In-Terminal AI Coding Agent

One-page Warp Agent CLI (AI coding agent built into the Warp terminal) reference covering install, core agent commands, and integrations & cloud agents. Includes /agent, /model, /plan, /orchestrate, /mcp, oz agent run. Copy-ready.

warpwarp-agentai
3 groups17 commands

AI Prompts

14 cheatsheets
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Prompt Engineering General Techniques Cheatsheet - Role/Structure/Constraints/CoT

One-page model-agnostic prompt engineering techniques covering role anchoring, structured output, explicit constraints, Few-shot, Chain of Thought, self-verification, and pitfalls. Copy-ready templates, not tied to any specific tool.

prompt-engineeringpromptai
5 groups25 commands

RAG Prompt Cheatsheet - Context-grounded Answers & Hallucination Control

One-page Retrieval-Augmented Generation (RAG) prompt patterns covering answer-only-from-context, cite sources, handle no-answer, fuse multi-passage evidence, and flag conflicts. Copy-ready, emphasizing traceability and hallucination control.

ragpromptai
5 groups25 commands

AI Agent System Prompt Cheatsheet - Role/Tools/Guardrails/Reflection

One-page autonomous-agent system-prompt patterns covering goal/role definition, tool declarations, step-by-step decision loops, guardrails & permissions, error handling and reflection. Copy-ready, emphasizing control and safety.

agentpromptai
5 groups25 commands

Text-to-Image Prompt Cheatsheet - Subject/Style/Composition/Light/Params

One-page text-to-image (Midjourney/Stable Diffusion/SDXL, model-agnostic) prompt structure covering subject, style & artists, composition & lens, light & material, negative prompts, and common params. Copy-ready.

imagepromptai
5 groups25 commands

Code-generation Prompt Cheatsheet - Requirement/Context/Constraints/Acceptance

One-page code-generation prompt patterns covering requirement & context handoff, language/framework/version constraints, I/O contracts, edge cases & tests, and acceptance criteria. Copy-ready, emphasizing compilable, runnable output.

codepromptai
5 groups25 commands

DeepSeek Prompts Cheatsheet - R1 Reasoning & V3 Chat Writing Techniques

One-page DeepSeek prompt writing cheatsheet, distinguishing the reasoning model R1 (deepseek-reasoner) from the chat model V3 (deepseek-chat). Covers R1 hard rules (no system prompt, instructions in user, no few-shot, temperature 0.6) and V3 system-lock, few-shot, JSON/function calling. Copy-ready templates.

deepseekpromptai
6 groups30 commands