RubyGems repository - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a RubyGems repository?

A RubyGems repository is a storage place on the internet where Ruby libraries (called gems) are kept. Developers can download and share these gems easily.

beginner

How do you install a gem from a RubyGems repository?

You use the command gem install gem_name in your terminal. This downloads the gem from the RubyGems repository and installs it on your computer.

beginner

What is the default RubyGems repository URL?

The default RubyGems repository URL is https://rubygems.org. This is where most gems are hosted and downloaded from.

intermediate

How can you specify a custom RubyGems repository?

You can specify a custom repository by using the --source option with the gem command, like gem install gem_name --source https://custom.repo.url.

intermediate

What is the purpose of the gem push command?

The gem push command uploads your gem to a RubyGems repository so others can use it. You need to be logged in to the repository to push gems.

What command installs a gem from the default RubyGems repository?

A gem remove gem_name

B gem push gem_name

C gem update gem_name

D gem install gem_name

The gem install gem_name command downloads and installs a gem from the default repository.

What is the default URL for the RubyGems repository?

A https://rubygems.org

B https://gems.ruby.com

C https://rubyrepo.net

D https://gemstore.com

The official RubyGems repository is hosted at https://rubygems.org.

Which command uploads your gem to a RubyGems repository?

A gem install

B gem push

C gem fetch

D gem build

Use gem push to upload your gem to a repository.

How do you install a gem from a custom repository?

A gem install gem_name --source https://custom.repo.url

B gem push gem_name --source https://custom.repo.url

C gem update gem_name --source https://custom.repo.url

D gem remove gem_name --source https://custom.repo.url

The --source option with gem install lets you specify a custom repository URL.

Before pushing a gem to RubyGems, what must you do?

A Update RubyGems

B Install the gem locally

C Build the gem with <code>gem build</code>

D Remove old gems

You must build your gem package first using gem build before pushing it.

Explain what a RubyGems repository is and how it helps Ruby developers.

Think about where Ruby code libraries are kept online.

Describe the steps to publish your own gem to a RubyGems repository.

Consider what commands you run before and during publishing.