Mine

#! /usr/bin/perl
#
#use warnings;use strict;
use Tk;
#
my $mw = MainWindow->new;
my $rep = $rep_base = '/home/francois';
opendir R_DIR,$rep or die "E/S : $!\n";

my (@rep,@sous_rep,@fic);
my ($lst_f,$lst_r,$elem, $dossier,$nr);

sub list_dir{
	while (my $fic = readdir(R_DIR)){
	#  next iF $FIc =~ /^\./; # saute les fichiers qui commencent avec .
	#  next if -d "$rep/$fic";# saute les rpertoires
	#  if ( -d "$rep/$fic"){
	    push @rep,$fic;
	#  }
	#  else {
	#    push @fic,$fic;
	#  }
	}
	unshift @rep,".";
}

sub list_select{
	my @select = $lst_f->curselection();
	$elem = $lst_f->get($select[0]);
}

sub rep_list{
	my @select = $lst_r->curselection();
	$dossier = $lst_r->get($select[0]);
	opendir R_LIRE, "$rep/$dossier"
		or die "E/S : $!\n";

#	$rep = "$rep_base/$dossier";
	$rep="$rep/".$lst_r->get($select[0]);

	while (my $k =  readdir(R_LIRE)){
#		next if $k =~ /^\./;
#		next if -d "$rep/$dossier/$k";
		push @rep,$k;
	}
	if ($dossier !~ /^\./){
		$dossier = $rep . '/' . $dossier;
	}
	else { $dossier = $rep;}
	$lst_r->delete(0,'end');
	$lst_r->insert('end',sort tri @rep);
	$nr ="Il y a ${\ (@rep + 0) } fichiers dans $dossier";
	@rep=();
}
	

$mw -> title("Lister un rpertoire");
$mw->geometry("700x400+60+30");
$mw->maxsize(650,600);

$lst_r = $mw->Scrolled("Listbox",-scrollbars=>'e',
			       -background => 'white',)->place( -x => 0,
			       					-y => 30,
			       					-width => 300,
								-height => 300,);
$lst_f = $mw->Scrolled("Listbox",-scrollbars=>'e',
			       -background => 'white',)->place( -x => 350,
			       					-y => 30,
			       					-width => 300,
								-height => 300,);

opendir R_DIR,$rep or die "E/S : $!\n";

#list_dir();

$lst_r->insert('end',sort tri @rep);
$mw->Button( -text => '>>', -command => sub {my @select = $lst_r->curselection(); my $dir = $lst_r->get($select[0]); push @sous_rep, "$rep/$dir"; $lst_f->delete(0,'end'); $lst_f->insert('end',sort tri @sous_rep); $lst_r->insert('end',sort tri @rep) },)->place( -x => 305, -y => 150, -width => 40, -height => 25);
$mw->Button( -text => '<<', -command => sub {$mw->destroy()},)->place( -x => 305, -y => 180, -width => 40, -height => 25);
$lst_f->bind("<Button-1>",\&list_select);
$lst_r->bind("<Button-1>",\&rep_list);
	
$mw->Label(  -textvariable => \$dossier,
	     -foreground => 'purple',)->place( -x => 350, -y => 0,);
$mw->Label( -textvariable => \$elem,
            -foreground => 'blue')->place( -x => 280, -y => 370,);

	while (my $fic = readdir(R_DIR)){
	#  next iF $FIc =~ /^\./; # saute les fichiers qui commencent avec .
	#  next if -d "$rep/$fic";# saute les rpertoires
	#  if ( -d "$rep/$fic"){
	    if(-d "$rep/$fic"){
	      push @rep,$fic."/";
	    }else{
	      push @rep,$fic;
	    }
	#  }
	#  else {
	#    push @fic,$fic;
	#  }
	}
	unshift @rep,".";
# trier sans tenir compte de la casse
# un sort simple comme dans le 1er message
# c'est un tri asciibetique (les chiffres,les majuscule ensuite les minuscules)
# la fonction tri permet le tri alphabetique
#
sub tri { lc($a) cmp lc($b) };

$lst_f->insert('end',sort tri @fic);
$lst_r->insert('end',sort tri @rep);

$mw->Label(  -textvariable => \$nr,
	     -foreground => 'brown',)->place( -x => 180 , -y => 350,);
$mw->Label(  -text => "$rep contient ${\(@rep-1)} rpertoires.",)->place( -x => 0, -y => 0,);

$mw->Button( -text => 'Quitter', -command => sub {$mw->destroy()},)->place( -x => 550, -y => 350,);
MainLoop;