[Part 01] First Encounter with Gemini CLI

Chapter 01: Gemini and CLI Meet
__Development Paradigm in the Age of Generative AI
__What is generative AI?
__How can generative AI be good at programming?
__Why a command line interface?
__Gemini and CLI Compatibility
__Various Geminis

Chapter 02: Getting to Know Gemini CLI
__Key features and benefits of Gemini CLI
__Gemini CLI, Cloud Code, Codex

Chapter 03 Using the Terminal
Using the macOS Terminal
__Using Git Bash on Windows
__Basic CLI usage

Chapter 04 Installation and Authentication
__Installing Node.js and npm
Running Gemini CLI in 30 seconds
__Gemini CLI is free enough
__Log in with your Google Workspace account
__Learn about various rate plans


Chapter 05: Starting Your First Conversation
__Gemini CLI screen configuration
__Start a conversation

[Part 02] Key Secrets to Using Gemini CLI Properly

Chapter 06: Writing Effective Prompts
__The four core components of a prompt
__How to Write Prompts That Get AI on Your Side

Chapter 07 Creating a Project Context
What is __GEMINI.md?
__Writing good context
__Learn about Markdown
__How do context files work?
__Tips for Writing Contexts

Chapter 08: Learning Built-in Commands
__What is the slash command?
__Shell mode that executes shell commands directly
__@ command for referencing external data

Chapter 09: Getting to Know the Built-in Tools
__Built-in tool operation steps
__Search tools when you need accurate information
__Filesystem tools for file management
__Various built-in tools
__Gemini CLI command line

Chapter 10: Using Git & GitHub Together
__What are Git and GitHub?
__Creating your first Git repository

[Part 03] AI Personalization: Creating Your Own Gemini CLI

Chapter 11: Understanding the Configuration File
__Gemini CLI Settings
__settings.json to create tools for me
Setting environment variables in __.env

Chapter 12 Working Safely
__What is a checkpoint?
__Isolated environment for enhanced security, sandboxing

Chapter 13: Creating Custom Tools
__Learn about custom tools
__Creating a simple custom tool

Chapter 14: Extending Gemini CLI with MCP
__Understanding MCP
__Using Obsidian MCP
__Check out various MCP features

Chapter 15 Defining Extensions
__Structure and operating principles of extension functions
__gemini-extension.json
__Difference between extensions and settings.json

[Part 04] Productivity Recipes to Transform Your Daily Life and Work

Chapter 16: Creating a Markdown Business Report
__Researching data
__Summary of Stablecoin Key Findings in a Large PDF Report

Chapter 17 Creating a Presentation
Installing __Quarto
__Creating a slide with Quattro

Share the Chapter 18 Project
__Preparing a GitHub repository
__Create a GitHub page
__Final result

Chapter 19: Automating File Management
__Organizing image files
Extracting data by keyword
Automatically organize daily news with __crontab

Chapter 20: Working with Documents Systematically
__Organizing meeting minutes and sharing documents
__Refining the written text to suit the purpose
__Turning ideas into concrete plans

[Part 05] Practical Blog Automation Project

Chapter 21: Preparing for the Project
__Define your ultimate goal
__Write a PRD

Chapter 22: Building Workflows with Custom Tools
__Add a blog creation tool
__Add an image creation tool

Chapter 23: Gathering Data and Writing
__Information collection and content creation
__Image processing and posting preparation

Chapter 24: Publishing Your Blog to GitHub
__Create a GitHub repository
__Quarto Blog Project
__Automating your blog
__Automation is not the end, but the beginning

[Part 06] Real-World Coin Monitoring Project

Chapter 25: Planning Your Application
__Writing a functional specification
__Writing an API Specification
__Create an execution plan

Chapter 26: Implementing Business Logic
__Document-based implementation
__Troubleshooting website errors

Chapter 27: Building Web Services into Applications
__What is a native application?
Installing Tauri
__Building Tauri
__Troubleshooting errors in Tauri builds

★ The person who commands AI at the terminal leads the future!

Today's AI doesn't just stay in the graphical environment that humans see.
The CLI (Command Line Interface) is the environment that allows for the fastest and most efficient automation of complex development processes and repetitive tasks.
This book introduces Gemini CLI, which integrates Google's powerful Gemini model into a CLI environment, and provides a practical roadmap for developers to adapt to the future coding paradigm.

★ Why should you start coding in Vibe with Gemini CLI?

Gemini CLI is a key part of Google's AI-first strategy, integrating the latest Gemini models directly into the terminal to present the future of development.
Developers worldwide are excited about the ability to analyze and fix entire codebases based on the massive context processing capabilities of 1 million tokens.
By 2025, more than 35% of developers worldwide will primarily use Google AI coding tools, with productivity reported to increase by an average of 40%.
This means that it goes beyond simple coding assistance and is positioned as an essential tool for the next-generation development environment that Google is proving with data.
Experience the dramatic improvement in developer productivity with Gemini CLI today.

★ AI personalization and automation that can be applied directly to practice!

It's not just about asking for code generation.
By tinkering with the deep-rooted configuration files and creating your own custom tools, the same AI becomes much smarter.
This book explains how to leap forward with Gemini CLI, a custom-designed companion for your business. It offers a transformative experience across all areas of your work, from extending your MCP to automatically organizing daily news and creating presentation materials.
For current developers, it will provide the latest AI workflows, and for readers new to AI coding, it will provide the most trendy and practical learning path.

★ Target audience for this book

Want to fully leverage Gemini's powerful capabilities without the API costs? Even if you're unfamiliar with the terminal, that's okay.
We'll walk you through everything from installation to basic usage, so even those new to AI coding can get started easily.
Tired of repetitive report writing, file organization, and document management? We'll show you how to create your own automated system using custom tools and MCP, and use AI as a 24/7 assistant.
Are you using only basic commands and not fully utilizing the potential of the Gemini CLI? This book will help you become a "power user" by exploring hidden features not properly covered in the official documentation, such as advanced configuration of GEMINI.md, creating custom tools, and MCP integration.
Are you concerned about varying levels of AI utilization among your development team? We present a systematic approach to boosting your entire team's development productivity through GitHub integration, a shareable GEMINI.md configuration, and a standardized workflow.
Curious about the present and future of terminal-based AI agents? Experience the cutting edge of AI coding and stay ahead of the next-generation development paradigm with the open-source, infinitely extensible Gemini CLI.

★ What this book covers

[Part 01] First Encounter with Gemini CLI: A New Starting Point in the AI ​​Era
Learn why you should use a terminal environment in the era of Vibe coding.
We cover all the preparation steps for Gemini CLI so that even those who don't know how to code can get started easily.
From installing Node.js and getting it up and running in 30 seconds to guiding you through various authentication and pricing plans, we provide friendly, step-by-step instructions so even beginners can start their first conversation with an AI partner without any barriers to entry.

[Part 02] Key Secrets to Using Gemini CLI Properly
We'll reveal key know-how to optimize AI agents for your tasks. Learn how to write effective prompts that provide accurate context to AI, and the secrets to creating GEMINI.md contexts that enable AI to understand all the project information.
You will also learn how to use built-in tools such as slash commands, shell mode, and @ commands one by one to handle file management and real-time search with AI.
Through integration with Git and GitHub, even non-developers can acquire practical skills to systematically manage projects.

[Part 03] AI Personalization: Creating Your Own Gemini CLI
This is an in-depth course on personalizing Gemini CLI.
Learn how to properly configure your working environment with the settings.json configuration file and work safely and flawlessly with checkpoints and sandboxing.
The key is creating custom tools and leveraging MCP.
This part empowers readers to become designers who can create and extend all the automation capabilities they need in their work environment, all through AI.

[Part 04] Productivity Recipes to Transform Your Daily Life and Work
This part is a practical application book that will help you immediately apply the knowledge you have learned to your actual work, thereby dramatically increasing your productivity.
With over 20 specific automation recipes, readers gain hands-on experience transforming their work with AI without coding. These include summarizing key points from large PDF reports, creating presentation materials using Quarto, automatically organizing daily news with crontab, automating keyword-based file management, organizing meeting minutes, and systematizing document sharing.

[Part 05] Practical Blog Automation Project: The Essence of AI Automation
This section details the process of building a fully operational AI-powered blogging system, integrating all the technologies of AI automation. You'll learn how to systematize the planning phase by creating a PRD (Product Requirements Document) and how to build custom tools and workflows.
We designed AI to handle the entire cumbersome posting process, including data collection, writing, and image processing, and ultimately completed a system that automatically posts to GitHub pages.
Through this project, readers will experience the potential and efficiency of AI automation and gain practical skills to extend it to their own work.

[Part 06] Real-World Coin Monitoring Project: Native Apps Made Easy for Non-Developers
This project proves that even non-developers can create MVP applications.
Beyond simple coding, you will experience the actual development process, including writing functional specifications and API specifications.
Develop your problem-solving skills by working with AI to resolve website errors that occur when retrieving data from a website.
Finally, we'll walk you through the complete process of building a web service into a desktop native application using Tauri.
Through this book, readers will gain experience in planning and implementing complete software.