Ruby Language Environment Variables Sample to get user profile path
Example
# will retrieve my home path
ENV['HOME'] # => "/Users/username"
# will try retrieve the 'FOO' environment variable. If failed, will get 'bar'
ENV.fetch('FOO', 'bar')
# will retrieve my home path
ENV['HOME'] # => "/Users/username"
# will try retrieve the 'FOO' environment variable. If failed, will get 'bar'
ENV.fetch('FOO', 'bar')
