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skills/cli/references/commands.md

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+# Gemini CLI Quick Reference
+
+Minimal reference for using Gemini CLI with this skill. For complete documentation, see [official Gemini CLI docs](https://github.com/google-gemini/gemini-cli).
+
+## Installation
+
+**macOS (Recommended):**
+```bash
+brew install gemini-cli
+```
+
+**Cross-Platform (npm):**
+```bash
+npm install -g @google/gemini-cli
+```
+
+**Verify:**
+```bash
+gemini --version  # Should show v0.17.0+
+```
+
+## Authentication
+
+⚠️ **IMPORTANT:** Gemini CLI must be authenticated before using this skill. Claude Code will NOT configure authentication for you.
+
+**Prerequisites:**
+- Gemini CLI installed and authenticated
+- Test that `gemini "test" -o text` works
+
+**Setup instructions:** See the [official Gemini CLI documentation](https://github.com/google-gemini/gemini-cli) for authentication setup.
+
+**If this skill fails with auth errors:**
+- Complete authentication setup manually using official docs
+- Verify with: `gemini "test" -o text`
+- Then retry using the skill
+
+## Basic Usage
+
+**For code review:**
+```bash
+gemini "Review this code for security issues: [code]" -o text
+```
+
+**For web research:**
+```bash
+gemini "What's new in React 19? Use Google Search." -o text
+```
+
+**For architecture analysis:**
+```bash
+gemini "Use codebase_investigator to analyze this project" -o text
+```
+
+## Common Options
+
+Run `gemini --help` for complete list. Key options used by this skill:
+
+- `-o text` - Human-readable output (default for consulting)
+- `-o json` - Structured output with stats
+- `-m gemini-2.5-flash` - Faster model for simple tasks
+
+## More Information
+
+- **Full CLI reference:** `gemini --help`
+- **Official documentation:** https://github.com/google-gemini/gemini-cli
+- **Models, configuration, troubleshooting:** See official docs above