As you said "unique header files in cwd" I suppose you mean recursively, starting from the cwd (as filenames are always unique per directory). 

use File::Find;
my @headers;
my %seen;

find(sub {
    push @headers, $_ if -f && /\.h$/ && !$seen{$_}++;
}, ".");

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In reply to Re: Putting all the files in an array by Eliya
in thread Putting all the files in an array by Anonymous Monk

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