clrghouz/app/Console/Commands/UserMakeAdmin.php

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;

use App\Models\User;

class UserMakeAdmin extends Command
{
	/**
	 * The name and signature of the console command.
	 *
	 * @var string
	 */
	protected $signature = 'user:make:admin {email : User Email}';

	/**
	 * The console command description.
	 *
	 * @var string
	 */
	protected $description = 'Make a user a system admin';

	/**
	 * Execute the console command.
	 *
	 * @return int
	 */
	public function handle()
	{
		$o = User::where('email',$this->argument('email'))->firstOrfail();
		$o->admin = ! $o->admin;
		$o->save();

		$this->info(sprintf('User [%s] %s an admin',$o->email,$o->admin ? 'IS' : 'is NOT'));
	}
}