Gem::Commands::OutdatedCommand

    # File lib/rubygems/commands/outdated_command.rb, line 11
11:   def initialize
12:     super 'outdated', 'Display all gems that need updates'
13: 
14:     add_local_remote_options
15:     add_platform_option
16:   end

    # File lib/rubygems/commands/outdated_command.rb, line 18
18:   def execute
19:     Gem::Specification.outdated.sort.each do |name|
20:       local   = Gem::Specification.find_all_by_name(name).max
21:       dep     = Gem::Dependency.new local.name, ">= #{local.version}"
22:       remotes = Gem::SpecFetcher.fetcher.fetch dep
23: 
24:       next if remotes.empty?
25: 
26:       remote = remotes.last.first
27:       say "#{local.name} (#{local.version} < #{remote.version})"
28:     end
29:   end