$ brew install rakudo-starand run
$ perl6. Rakudo Star in Homebrew has been updated to the newest version: 2010.10.
On Debian-like system, the best one should be using PPA of dexter on LaunchPad. The version falls behind Homebrew a little to be 2010.09. Because the Rakudo Star requires Parrot 2.8+, we also have to add PPA of Parrot to satisfy. Command
$ sudo apt-add-repository ppa:dexter/rakudo-pkg ppa:dexter/parrot-pkgand run update, install. Then have fun!