Gemini CLI: Everything You Need To Know (Full Tutorial)

Video Description

Gemini CLI is more than a code generator - it’s a powerful, open-source AI agent from Google that can read/write files, run shell commands, search the web, and plug into MCP extensions like Nanobanana and GitHub. In this ultimate, chaptered guide, you’ll go from install → power user: flags, commands, operation modes, sandboxing, custom commands, IDE integration, and a peek under the hood at the architecture. ⏱ Chapters / Timestamps 00:00 — Intro 00:17 — Chapter I: Installation & Authentication 03:29 — Chapter II: Overview & Basic Usage 06:03 — Chapter III: Flags 10:46 — Chapter IV: Built-in Commands 15:22 — Chapter V: Operation Modes 16:17 — Chapter VI: Example Use Cases 19:38 — Chapter VII: Custom Commands 24:59 — Chapter VIII: Customization & Context with GEMINI.md (Plan mode, Explain Mode Setup) 28:41 — Chapter IX: Tools 31:35 — Chapter X: Sandboxing 33:12 — Chapter XI: Extensions (Nanobanana, GitHub, etc.) 37:35 — Chapter XII: IDE Integration (Visual Studio Code, Cursor) 39:36 — Chapter XIII: Architecture & Interaction Flow 🎯 What you’ll learn Fast install & two auth methods (Gmail vs API Key) Headless vs Interactive vs Shell modes Must-know flags (models, checkpointing, approval modes, allowed tools, output formats) Built-in commands: /memory, /chat, /theme, /settings, /restore, /stats, etc. Real use cases (image understanding, web search, build a Recipe app) Custom Commands with args, shell injection, and file injection GEMINI.md for persistent context & mode-specific setups (Plan/Explain) Tools system, Sandboxing (Seatbelt/Docker), MCP Extensions (Nanobanana, GitHub) IDE integration (VS Code / Cursor) Architecture & interaction flow of Gemini CLI 🔗 Resources Gemini CLI Docs: geminicli.com/docs Extensions Gallery: geminicli.com/extensions Architecture Overview: geminicli.com/docs/architecture/ Telemetry Setup: google-gemini.github.io/gemini-cli/docs/cli/telemetry.html 💡 Notes Never share your API keys on screen. Rotate/delete keys after demos. For safe experimentation, try sandboxing (-s) or set GEMINI_SANDBOX=true. 👍 If this helped, like & subscribe for more dev-focused AI deep-dives. 💬 Drop questions or your favorite custom commands in the comments! #GeminiCLI #GoogleAI #AIAgent #Developers #MCP #VSCode #Cursor #Nanobanana #OpenSource #Tutorial