require 'rubygems/command' require 'rubygems/local_remote_options' require 'rubygems/spec_fetcher' require 'rubygems/version_option' class Gem::Commands::OutdatedCommand < Gem::Command include Gem::LocalRemoteOptions include Gem::VersionOption def initialize super 'outdated', 'Display all gems that need updates' add_local_remote_options add_platform_option end def execute locals = Gem::SourceIndex.from_installed_gems locals.outdated.sort.each do |name| local = locals.search(/^#{name}$/).last dep = Gem::Dependency.new local.name, ">= #{local.version}" remotes = Gem::SpecFetcher.fetcher.fetch dep remote = remotes.last.first say "#{local.name} (#{local.version} < #{remote.version})" end end end