Bundler is a tool for managing Ruby application dependencies. It tracks and installs the exact gem versions needed for a project to provide a consistent environment across development, staging, and production. Getting started with Bundler is easy - install it with 'gem install bundler' and specify dependencies in a Gemfile. Bundler ensures the correct gems are installed and resolves dependency conflicts.

1. hghg

2. BUNDLER :
The best way to manage a Ruby
application's gems

3. Bundler provides a consistent
environment for Ruby projects by
tracking and installing the exact
gems and versions that are
needed.

4. Bundler is an exit from dependency
hell, and ensures that the gems
you need are present in
development, staging, and
production. Starting work on a
project is as simple as bundle
install.

5. Getting started with bundler is easy! Open a terminal window and run this command:
Getting Started
$ gem install bundler

6. Getting started with bundler is easy! Open a terminal window and run this command:
Getting Started
$ gem install bundler
Specify your dependencies in a Gemfile in your project's root:
source 'https://rubygems.org'
gem 'nokogiri'
gem 'rack', '~> 2.0.1'
gem 'rspec'

7. Getting started with bundler is easy! Open a terminal window and run this command:
Getting Started
$ gem install bundler
Specify your dependencies in a Gemfile in your project's root:
source 'https://rubygems.org'
gem 'nokogiri'
gem 'rack', '~> 2.0.1'
gem 'rspec'
Install all of the required gems
from your specified sources:
$ bundle install
$ git add Gemfile Gemfile.lock

8. Bundler is also an easy way to create new gems. Just like you might create a standard Rails project using
rails new, you can create a standard gem project with bundle gem.
Create a new gem with a README, .gemspec, Rakefile, directory structure, and all the basic boilerplate
you need to describe, test, and publish a gem:
Create a rubygem with Bundler
$ bundle gem my_gem
Creating gem 'my_gem'...
create my_gem/Gemfile
create my_gem/.gitignore
create my_gem/lib/my_gem.rb
create my_gem/lib/my_gem/version.rb
create my_gem/my_gem.gemspec
create my_gem/Rakefile
create my_gem/README.md
create my_gem/bin/console
create my_gem/bin/setup
create my_gem/CODE_OF_CONDUCT.md
create my_gem/LICENSE.txt
create my_gem/.travis.yml
create my_gem/test/test_helper.rb
create my_gem/test/my_gem_test.rb
Initializing git repo in ./my_gem

9. Run an executable that comes with a gem in your bundle:
In some cases, running executables without bundle exec may work, if the executable happens to be
installed in your system and does not pull in any gems that conflict with your bundle.
However, this is unreliable and is the source of considerable pain. Even if it looks like it works, it may not
work in the future or on another machine.
Finally, if you want a way to get a shortcut to gems in your bundle:
Bundle install
$ bundle install --binstubs
$ bin/rspec spec/models
The executables installed into bin are scoped to the bundle, and will always work.
$ bundle exec rspec spec/models

10. bundle update
bundle-update - Update your gems to the latest available versions
Bundle update
bundle update *gems [--group=NAME]
[--source=NAME]
[--local]
[--ruby]
[--bundler[=VERSION]]
[--full-index]
[--jobs=JOBS]
[--quiet]
[--force]
[--patch|--minor|--major]
[--strict]
[--conservative]
Bundle update

11. bundle package
bundle-package - Package your needed .gem files into your application
Bundle package
Bundle package
bundle exec
bundle-exec - Execute a command in the context of the bundle
Bundle exec
bundle exec [--keep-file-descriptors] command

12. bundle config
bundle-config - Set bundler configuration options
Bundle config
Bundle config
Description
This command allows you to interact with bundler's configuration system. Bundler retrieves its
configuration from the local application (app/.bundle/config), environment variables, and the user's home
directory (~/.bundle/config), in that order of priority.
Executing bundle config with no parameters will print a list of all bundler configuration for the current
bundle, and where that configuration was set.

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