从cronjob运行Cakephp3代码

Hi i want execute my code from cronjob. I have used below 2 command but its not working

/path/bin/cake transaction chekFailedTransactions

cd /path && bin/cake transaction chekFailedTransactions

Where my below is my shell code

<?php
namespace App\Shell;
use Cake\Console\Shell;
class TransactionShell extends Shell {  
    public function main() {
        $this->out('Some MSG');
    }
    public function chekFailedTransactions() {
        //Code to execute
        $this->out('Cron Executed!!');
    }
}
?>