Add the "w" (for "warn") make it "-wlane" and read: Scalar value @F[0] better written as $F[0] at -e line 1. Scalar value @F[1] better written as $F[1] at -e

Add the "w" (for "warn") make it "-wlane" and read: Scalar value @F[0] better written as $F[0] at -e line 1. Scalar value @F[1] better written as $F[1] at -e line 1. In Perl 5 the array elements of @a are $a[0] $a[1] etc. However @F[0] works too because a "slice" is returned.