This guide will help you understand and configure the Bundler, a dependency manager for Ruby applications. Bundler helps you manage your application's dependencies by providing a simple and efficient way to install, update, and manage gems.

Overview

Bundler maintains a Gemfile in your application, which lists all the gems your application depends on. It ensures that you have the right versions of gems and that they are compatible with each other.

Basic Commands

Here are some of the basic Bundler commands you should know:

  • bundle install: Installs the gems specified in your Gemfile.
  • bundle update: Updates the gems to the latest versions specified in your Gemfile.
  • bundle exec: Executes a command within the context of the bundle, ensuring that the correct versions of gems are used.

Configuring Bundler

To configure Bundler, you can use the following commands:

  • bundle config: Lists or sets configuration settings.
  • bundle config --delete: Deletes a configuration setting.

Example Configuration

bundle config set path /path/to/local/gems

This command sets the path where Bundler should look for gems first.

Best Practices

  • Always use bundle install to ensure you have the correct versions of gems.
  • Keep your Gemfile updated with the latest versions of gems.
  • Use bundle exec to run your application and avoid conflicts with system gems.

Learn More

For more information on Bundler, please visit the official Bundler documentation.

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