bundler

Install dependencies from Gemfile

$ bundle install

$ bundle add [gem]

$ bundle update

$ bundle update [gem]

$ bundle exec [command]

$ bundle init

$ bundle list

$ bundle audit

bundle command [options] [arguments]

bundler manages Ruby application dependencies by tracking and installing exact gem versions needed. It ensures consistent environments across development, staging, and production by using a Gemfile and Gemfile.lock.
Since Ruby 2.6, Bundler is part of Ruby's standard library.

--no-color

Disable colored output

Enable verbose output

Install gems to specified directory

Exclude gem groups from installation

Install in deployment mode

Gemfile

Specifies Ruby gem dependencies for the project. Located in the project root directory.

Per-project Bundler configuration including install paths, without groups, and deployment settings. Also reads from ~/.bundle/config for global defaults.

install

Install gems specified in Gemfile

Update gems to latest versions within constraints

Execute command in context of bundle

Add gem to Gemfile and install

Remove gem from Gemfile

Generate a simple Gemfile

Show all installed gems

Show gem installation location

Verify all dependencies are installed

Remove unused gems

Display warnings about common problems

Create a simple gem skeleton

Display platform compatibility information

Always use bundle exec when running gem executables to ensure correct versions. The Gemfile.lock should be committed to version control. Running bundle update without arguments may introduce breaking changes.

gem(1), ruby(1), rake(1)