Your sub is called for each encountered file or directory. So, if a directory has 5 files in them, you push the directory 5 times on the array.

You need something like (untested): 

    find (sub {push @dirs => $File::Find::name if -d});

[download]
The fact that it takes "ages" is that it's going to traverse your entire file hierarchy. If you have a million files, the sub will be called a million times.

Abigail

In reply to Re: Retrieving a List of directories only by Abigail-II
in thread Retrieving a List of directories only by blackadder

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