Syntax
- ENV[variable_name]
- ENV.fetch(variable_name, default_value)
Remarks
Let get user profile path in a dynamic way for scripting under windows
Sample to get user profile path
# 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')
