use 5.026;
use warnings;

use Data::Dumper;

my @paths = qw{
   /abc/def/ghi
   /wxy/z
   /usr/local/lib/x86_64-linux-gnu/perl/5.26.1
   bin/fred
   somefile
   };

foreach my $path ( @paths )
{
    my @elems = split m{/}, $path;
    my @arr;
    while ( @elems )
    {
        last if @elems == 1 && ! $elems[ 0 ]; # Ignore empty first element
                                              # if path starts with a /
        push @arr, join q{/}, @elems;
        pop @elems;
    }
    say $path;
    print Data::Dumper->Dumpxs( [ \ @arr ], [ qw{ *arr } ] );
    say q{-} x 30;
}