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#config (5)

Cheat sheets (5)

dotenv — Load .env files into process.env

Package-level reference for the dotenv config loader on npm — install, native Node alternatives, dotenvx successor, and gotchas.
npm package config env dotenv

PyYAML — YAML Parser and Emitter

Package-level reference for PyYAML on PyPI — safe_load vs load, dump, custom tags, install, alternatives like ruamel.yaml.
pip package yaml config parsing

Codex Configuration

Complete config.toml reference for Codex CLI — model selection, approval policies, sandbox modes, profiles, MCP server stubs, shell environment, notify hooks, and project trust levels.
codex openai config toml configuration settings profiles

dotenv — Environment Variables from .env Files

Load configuration and secrets from .env files into process.env at startup, with multi-environment files, variable expansion, schema validation, and Node 20.6+ built-in --env-file alternatives.
javascript node config env dotenv

fish — Friendly Interactive Shell

Comprehensive fish shell reference covering syntax, variables, functions, abbreviations, completions, config files, path management, prompt customization, Fisher plugins, fish 4.x features (Rust rewrite), and migration from bash/zsh.
fish shell terminal cli scripting zsh bash prompt functions config web-researched