Custom clear cache WP CLI plugin example

command.php

<?php
/*
Plugin Name: Custom clear cache
Description: Clears out the custom cache code
Author: Tyler Fahey
Version: 1.0.0
Author URI: https://tylerfahey.com
*/

class CCC_CLI {

	/**
	 * Clears out the custom cache folder.
	 *
	 * @since  0.0.1
	 * @author Tyler Fahey
	 */
	public function clear() {
	    WP_CLI::line( 'Clearing out custom cache...' );
	    $files = glob('/files/cache/*'); // get all file names
	    foreach($files as $file){ // iterate files
	      if(is_file($file))
		unlink($file); // delete file
	    }
	    WP_CLI::line( 'Done.' );
	}

}

/**
 * Registers our command when cli get's initialized.
 *
 * @since  1.0.0
 * @author Tyler Fahey
 */
function ccc_cli_register_commands() {
	WP_CLI::add_command( 'ccc', 'CCC_CLI' );
}

add_action( 'cli_init', 'ccc_cli_register_commands' );