If I'm following your spec, the easiest way to accomplish your goal is use a hash: 
#!/usr/bin/perl -w

use strict;
use File::Find::Rule;
use File::Basename;


my @filelist = qw(1234567_3a_20101000.html  99877_b_20111111.html 9987
+7_c_20111111.html 99877_d_20111111.html 99877_e_20111111.html 99877_u
+f_20111111.html
                  1234567_g_20101000.html  99877_h_20111111.html 99877
+_i_20111111.html 99877_j_20111111.html 99877_k_20111111.html 99877_ll
+_20111111.html
                  1234567_pl_20101000.html  99877_qa_20111111.html 998
+77_rr_20111111.html 99877_sx_20111111.html 99877_xy_20111111.html 998
+77_nm_20111111.html); 

my %want;
$want{$_}++ for @filelist;

my $dir = '/var/www/files/';

my $find = File::Find::Rule
  ->file
  ->name(qr/\.html?$/)
  ->start( $dir );

my $f_count = 0;

my @found_html;

while ( defined ( my $html_document = $find->match ) ) {
   $f_count++;

    my $filenames = basename( $html_document );

    push @found_html, $filenames if $want{$filenames};
}

[download]

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: Search array of file names in directory structure by kennethk
in thread Search array of file names in directory structure by Anonymous Monk

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