QueueCommand.php

<?php

namespace Application\Command;

use \Symfony\Component\Console\Command\Command;
use \Symfony\Component\Console\Input\InputArgument;
use \Symfony\Component\Console\Input\InputInterface;
use \Symfony\Component\Console\Input\InputOption;
use \Symfony\Component\Console\Output\OutputInterface;

class QueueCommand extends Command
{

    protected function configure()
    {
        $this->setName('queue:post')
             ->setDescription('Posting due content from Queue.');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $output->writeln("Hello world");
    }

}