Command-line arguments

Perl 5's @ARGV is available as @*ARGS. Alternatively, if you define a subroutine named MAIN, Perl will automatically process @*ARGS according to Unix conventions and MAIN's signature (or signatures, if your MAIN is a multi sub) and then call MAIN with appropriate arguments; for more detailed information see: https://docs.raku.org/language/create-cli

# with arguments supplied
$ raku -e 'sub MAIN($x, $y) { say $x + $y }' 3 5
8

# missing argument:
$ raku -e 'sub MAIN($x, $y) { say $x + $y }' 3 
Usage:
-e '...' x y

If the program is stored in a file, the file name is printed instead of -e '...'.