Question

I want to (by using File::Find) first list all files in current directory, and after that jump to a subdirectory. Is it possible?

Answer 1

Use the preprocess option to do the files in each directory before descending into subdirectories:

use strict;
use warnings;
use File::Find 'find';

find(
    {
        'wanted' => sub { print "$File::Find::name\n" },
        'preprocess' => sub { sort { -d $a <=> -d $b } @_ }
    },
    '.'
);

Though to avoid extra stats, it should be:

sub { map $_->[0], sort { $a->[1] <=> $b->[1] } map [ $_, -d $_ ], @_ }