B::Lint(3pm) on Linux
The text 9097a5f76221, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Perl lint
Flags it lists
-
-u
The text 9097a5f76221, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Perl lint
-u