Something like the following (untested) code perhaps?

opendir my ($scan), $path or die "Can't scan folder $path: $!\n";

while (my $entry = readdir $scan) {
    next if ! -d "$path/$entry" || $entry !~ /^d[1-5]$/;
    next if ! -f "$path/$entry/list.txt";
    
    ...
}

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True laziness is hard work

In reply to Re: Reading the same file from all the subdirectories by GrandFather
in thread Reading the same file from all the subdirectories by zing

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