user
Create an executable file that copies stdin to stdout, or else a script that does so through the invocation of an interpreter at the command line.
assistant
(formerly Perl 6)
When invoked at a command line: Slightly less magical than Perl / sed. The p flag means automatically print each line of output to STDOUT. The e flag means execute what follows inside quotes. ".lines" reads lines from the assigned pipe (file handle), STDIN by default.

```
raku -pe'.lines'

```

When invoked from a file: Lines are auto-chomped, so need to re-add newlines (hence .say rather than .print)

```
.say for lines

```