$ ruby setup.rb#---$ ruby setup.rb all --installdirs=home#---$:# => ["/home/leonardr/lib/ruby", "/usr/local/lib/site_ruby/1.8", ... ]require 'installed_via_setup'# => true#---setup.rbpost-clean.rblib/lib/installed_via_setup.rblib/pre-config.rbbin/bin/command.rb#---$ ruby setup.rb clean---> bin<--- bin---> lib<--- libPost-clean hook called.rm -f .configrm -f InstalledFiles#---$ ruby setup.rb...Pre-configuration hook called....rm -f InstalledFiles---> binmkdir -p /usr/bin/install command.rb /usr/bin/<--- bin---> libmkdir -p /usr/local/lib/site_ruby/1.8/install installed_via_setup.rb /usr/local/lib/site_ruby/1.8/#---