arkutil is licensed under GPLv2+. The latest version of arkutil, v0.13.5, was released on June 24, 2013 (read the CHANGES).
Supported Ruby versions are 1.8.6, 1.8.7, and 1.9.x.
If you install Ruby 1.8.6 or 1.8.7, also install RubyGems (a Ruby package manager) after installing Ruby. Check whether you have RubyGems by executing 'gem list' in a shell window (which should run without error if you do).
If you need to install RubyGems (the package manager) manually, download the latest version (rubygems-x.x.x.tgz) from https://rubygems.org/pages/download and install it with:
$ tar xvzf rubygems-x.x.x.tgz $ cd rubygems-x-x-x $ sudo ruby setup.rb
Now install arkutil with
$ sudo gem install arkutil-x.x.x.gemConfirm installation with 'gem list' (no sudo required), which should show arkutil.
arkutil is written and maintained by Young Hyun as a part of CAIDA's work on the Archipelago Measurement Infrastructure.