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RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called a “gem”), a tool designed to easily manage the installation of gems, and a server for distributing them. It is analogous to EasyInstall for the Python programming language. RubyGems is now part of the standard library from Ruby version 1.9.
That said, what’s the difference between GEM_HOME and GEM_PATH?
GEM_PATHprovides the locations (there may be several) where gems can be found.GEM_HOMEis where gems will be installed (by default).(Therefore
GEM_PATHshould includeGEM_HOME).