File::Basename 
use File::Basename qw( dirname );

my @path_list = ...;

my %seen;

my @dir_list = sort                    # Sort dirs
               grep { ! $seen{$_}++ }  # Remove dups
               map  { dirname($_) }    # Extract dirs
               @path_list;

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In reply to Re: extracting file names by ikegami
in thread extracting file names by gitarwmn

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