#!/usr/bin/perl
use strict;
use warnings;

my $dir = $ARGV[0] || $ENV{HOME};
my @files;
if (-d $dir){
   opendir (my $DIR, $dir);
   @files = grep {/^(?!\.{1,2}\z)/} readdir($DIR);
   closedir($DIR);
} else {
  die("can't open the dir, $dir\n");
}

foreach my $file (@files) {
   print "$file\n";
}

##</code><code>##

$ perl myls.pl /home