What is a gem? - RubyGems GuidesUnpack the mystery behind what’s in a RubyGem. Structure of a Gem Each gem has a name, version, and platform. For example, the rake gem has a 13.0.6 version (from Jul 2021). Rake’s platform is ruby, which means it works on any platform Ruby runs on. Platforms are based on the CPU architecture, operating system type and sometimes the operating system version. Examples include “x86-mingw32” or “java
