#!/usr/bin/perl --
use strict; use warnings;
use Data::Dump qw/ dd /;
use Path::Tiny qw/ path cwd /;
use File::Find::Rule qw/ find rule /;
my @names = find( directory => maxdepth => 1, in => $top.$second );
my @files = find( file => name => qr/\.txt$/i, in => \@names );
for my $fp ( @files ){
    my $name = path( $fp )->basename;
    dd( $fp, $name );
}