execute

# File lib/rubygems/commands/update_command.rb, line 84
  def execute
    hig = {}

    if options[:system] then
      update_rubygems
      return
    end

    say "Updating installed gems"

    hig = highest_installed_gems

    gems_to_update = which_to_update hig, options[:args].uniq

    updated = update_gems gems_to_update

    if updated.empty? then
      say "Nothing to update"
    else
      say "Gems updated: #{updated.map { |spec| spec.name }.join ' '}"
    end
  end