in reply to Reading the same file from all the subdirectories

The code should select list.txt from first directory and then process all the 10 list.txt files one by one from each of the 10 directories.

chdir "my_parent_dir";
my @files = glob("*/list.txt");

for my $item(@files){
   open my $currentfile, '<', $item;
   .. do something...
   close $currentfile; 
   } # and go to the next item of the loop

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