Please note that Perl 6 has been renamed to Raku (https://raku.org using the #rakulang tag on social media).
With regards to being better / worse in the shell scripting domain, I would say that currently performance wise, Perl is better for shell scripting. But development of shell script-wise, I think Raku has superior handling of command line parameters built in: https://docs.raku.org/language/create-cli
With regards to being better / worse in the shell scripting domain, I would say that currently performance wise, Perl is better for shell scripting. But development of shell script-wise, I think Raku has superior handling of command line parameters built in: https://docs.raku.org/language/create-cli