5
Raku is pretty damn Cool
(felix-knorr.net)
TL;DR
It is good for writing cross-platform scripts. It's easier and more powerful than Bash but not as heavy and cumbersome as Python.
Raku is the new name for Perl 6. They changed the name because there are backward incompatible changes in the new version, and they wanted to try to move away from the negative associations people have with Perl.
Perl has always been better than Bash at scripting, and Raku added some modern features to take that advantage further.
