opendir (DIR, ".") or die "Cannot open the current directory: $!"; my @files = grep {$_ ne '.' and $_ ne '..'} readdir DIR; close (DIR) or die "Cannot close the current directory: $!"; foreach my $file (@files) { if (-d $file) { opendir (SUBDIR, "$file") or die "Cannot open the sub directory: $!; my @subfiles = grep {$_ ne '.' and $_ ne '..'} readdir DIR; closedir(SUBDIR) or die "Cannot close the sub directory: $!"; unless (@subfiles) { unlink("$file"); } } }