Scripts to rename posts filenames

renamer.php

<?php

require 'vendor/autoload.php';

$renamed_posts = [];

foreach (new DirectoryIterator('source/_posts') as $file) {
    if (!$file->isFile()) {
        continue;
    }

    $filename = $file->getBasename('.md');

    if (preg_match('/^\d{4}-\d{2}-\d{2}/', $filename)) {
        $filename =substr($filename, 10);
    }

    $new_filename = str_slug($filename) . '.md';

    $renamed_posts[$file->getFilename()] = $new_filename;
  
    echo 'git mv ' . $file->getRealPath() . ' source/_posts/' . $new_filename . PHP_EOL;
}