Lumen make:command

You can use the artisan CLI in Lumen as the same way as in Laravel but with fewer built-in commands. To see all built-in commands, use the php artisan command in Lumen.

Although there is no make:command command at Lumen, you can create your custom command:

• Add new command class inside the app/Console/Commands folder, you can use the sample class template of the framework serve command

• Register your custom command by adding your created class to the $commands member inside the app/Console/Kernel.php file.

Except the command generating, you can use the Laravel docs for commands when working with Lumen.

When you create your command class use this:

<?php
namespace App\Console\Commands;
use Illuminate\Console\Command;

Instead of what was described above about using serve command example

Here is a template for a new command. You can just copy and paste this in to a new file and start working. I tested it on lumen 5.7.0

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;

class CommandName extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'commandSignature';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Command description';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {

        $this->info('hello world.');
    }
}

Then register it on the Kernel.php file.

/**
* The Artisan commands provided by your application.
*
* @var array
*/
protected $commands = [
   \App\Console\Commands\CommandName::class
];