14 Essential Claude Code Configurations That Reduced My Setup Time by 75%

14 Essential Claude Code Configurations That Reduced My Setup Time by 75% 6.1 Installation & Initial Setup: From Zero to Running Claude Code in 5 Minutes I once spent hours debugging a misconfigured Claude Code setup. Now, I can get it up in minutes. Here's how: Installation # Recommended via npm npm install -g @anthropic-ai/claude-code # Alternative via yarn yarn global add @anthropic-ai/claude-code Login # Interactive Login (opens browser) claude login # Non-Interactive via API Key export ANTHROPIC_API_KEY = "sk-ant-..." First Usage & Project Initialization cd your-project claude "Analyze my project structure" claude --init # Auto-generates CLAUDE.md (improved in Ch7) claude doctor # Troubleshoot environment issues Warning: In WSL, ensure node is in your PATH and bubblewrap is installed for sandboxing. Use /doctor to resolve common WSL/Node.js path issues. 6.2 Understanding settings.json Three-Layer Architecture Claude Code's settings are layered like an onion: Layer Location Scope S