Copy all PDFs attached to a specific template type in WordPress.

wp-export.php

<?php
include "wp-load.php";

//Usage:
// replace the meta_query value with your template filename
// change the $newfile to reflect the directory you want to copy your files to

$posts = new WP_Query(
  array(
    'post_type' => 'page',
    'posts_per_page' => -1,
    'post_status' => 'publish',
    'meta_query' =>
      array(
        array(
          'key' => '_wp_page_template',
          'value' => 'page-board-portal.php',
      )
    )
  )
);
$posts = $posts->posts;
header('Content-type:text/plain');
foreach($posts as $post) {
    switch ($post->post_type) {
        case 'revision':
        case 'nav_menu_item':
            break;
        case 'page':
            $permalink = get_page_link($post->ID);
            break;
        case 'post':
            $permalink = get_permalink($post->ID);
            break;
        case 'attachment':
            $permalink = get_attachment_link($post->ID);
            break;
        default:
            $permalink = get_post_permalink($post->ID);
            break;
    }
    echo "\n{$post->post_type}\t{$permalink}\t{$post->ID}";

    $attachments = get_posts( array(
        'post_type' => 'attachment',
        'posts_per_page' => -1,
        'post_parent' => $post->ID,
        'exclude'     => get_post_thumbnail_id()
    ) );

    if ( $attachments ) {

        foreach ( $attachments as $attachment ) {
          //'application/pdf'
          //'application/zip'
          //'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
          //'application/vnd.openxmlformats-officedocument.presentationml.presentation'
            if($attachment->post_mime_type == 'application/vnd.openxmlformats-officedocument.presentationml.presentation' ) {
                $parsed = parse_url( wp_get_attachment_url( $attachment->ID ) );
                $url    = '.' . dirname( $parsed [ 'path' ] ) . '/' . urlencode( basename( $parsed[ 'path' ] ) );
                $filename = basename($url).PHP_EOL;

                $newfile = './wp-content/uploads/old-attachments/' . $filename . '.pptx';
                //$newfile = $total_attachments . '.pdf';
                //echo "\n$url=$newfile";
                //system("cp $url $newfile");
                //echo unlink($url);
            }
        }
    }
}
?>