uninstall_all

# File lib/rubygems/commands/uninstall_command.rb, line 138
  def uninstall_all
    specs = Gem::Specification.reject { |spec| spec.default_gem? }

    specs.each do |spec|
      options[:version] = spec.version
      uninstall_gem spec.name
    end

    alert "Uninstalled all gems in #{options[:install_dir]}"
  end