Supabase CLI setup - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Supabase CLI Initialization

What is the primary purpose of running supabase init in a new project directory?

A It initializes local configuration files and folders needed for Supabase CLI to manage the project.

B It creates a new Supabase project in the cloud automatically.

C It deploys the database schema to the Supabase cloud instance.

D It installs the Supabase CLI globally on your machine.

💡 Hint

Think about what happens locally when you start using Supabase CLI in a folder.

The supabase init command sets up local files and folders that the CLI uses to manage your project. It does not create cloud projects or deploy schemas.

❓ Configuration

intermediate

Correct Supabase CLI Login Command

Which command correctly logs you into your Supabase account using the CLI?

A supabase signin

B supabase auth login

C supabase connect

D supabase login

💡 Hint

Check the official Supabase CLI command for authentication.

The command supabase login opens a browser window to authenticate your account with the CLI.

❓ Architecture

advanced

Supabase CLI Local Development Setup

After running supabase init, which folder does the CLI create to store your local database migrations and seed files?

A migrations

B supabase/migrations

C supabase/local

D db/migrations

💡 Hint

Look for the folder inside the supabase directory that holds migration files.

The CLI creates a supabase/migrations folder to keep track of database schema changes locally.

❓ security

advanced

Handling Supabase CLI Access Tokens

Where does the Supabase CLI store your access token after login, and what is the best practice for securing it?

A In a plain text file in the project folder; best practice is to add it to .gitignore.

B In environment variables; best practice is to never commit them to version control.

C In the system keychain or credential store; best practice is to use OS-level security features.

D In a hidden file in your home directory; best practice is to encrypt the file manually.

💡 Hint

Think about how CLI tools usually store sensitive tokens securely on your computer.

The Supabase CLI stores tokens securely in the OS keychain or credential store to protect them from unauthorized access.

❓ service_behavior

expert

Effect of Running supabase start Without Docker

What happens if you run supabase start on a machine where Docker is not installed or running?

A The CLI will show an error indicating Docker is required and will not start the local services.

B The CLI will start only the database service without Docker.

C The CLI will start a cloud-based Supabase instance instead of local services.

D The CLI will automatically install Docker and start the local Supabase stack.

💡 Hint

Consider what the Supabase CLI depends on to run local services.

Supabase CLI requires Docker to run local services. Without Docker, it cannot start and will show an error.