MQTT.php

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Symfony\Component\Process\Process;

class MQTT extends Command
{
    protected $signature = 'mqtt:kill-process';

    protected $description = 'Stop the overseer mqtt node process';

    public function handle()
    {
        $process = new Process(['pkill', '-f', 'mqtt-demo-process-node']);
        $process->start();

        foreach ($process as $type => $data) {
            if ($process::OUT === $type) {
                echo "\nRead from stdout: ".$data;
            } else {
                echo "\nRead from stderr: ".$data;
            }
        }
    }
}