RubyGems
RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries, called 'gems'. It allows developers to easily install, manage, and update Ruby libraries and dependencies for their projects. The tool includes a command-line interface (gem) for interacting with the RubyGems ecosystem and a central repository at rubygems.org.
Developers should learn RubyGems when working with Ruby projects to efficiently handle dependencies, share code, and ensure consistent environments across development and production. It is essential for managing libraries in web development (e.g., with Rails), scripting, and any Ruby application that relies on external packages, as it simplifies installation and version control.