mcp/app/Commands/LetsEncryptAddCommand.php

<?php

namespace App\Commands;

use Illuminate\Console\Scheduling\Schedule;
use LaravelZero\Framework\Commands\Command;

/**
 *  Add LetsEncrypt Certificate
 *
 *
 *  @author Björn Hase, Tentakelfabrik
 *  @license http://opensource.org/licenses/MIT The MIT License
 *  @link https://gitea.tentakelfabrik.de/Tentakelfabrik/mcp
 *
 */
class LetsEncryptAddCommand extends Command
{
    /**
     * The signature of the command.
     *
     * @var string
     */
    protected $signature = 'lets-encrypt:add {email} {domain*} ';

    /**
     * The description of the command.
     *
     * @var string
     */
    protected $description = 'Add Certificates from LetsEncrypt';

    /**
     * Execute the console command.
     *
     * @return mixed
     *
     */
    public function handle()
    {
        $domains = $this->argument('domain');

        $domainFlags = '';

        foreach($domains as $domain) {
            $domainFlags .= '-d '.$domain.' ';
        }

        exec('certbot --non-interactive --agree-tos -m '.$this->argument('email').' --nginx '.$domainFlags, $output);
        $this->line(implode("\n", $output));

        foreach($output as $line) {
            //Congratulations!
            //check for string 
        }
    }
}