composer require rareloop/hatchet

Once installed you need to copy the hatchet file into your Lumberjack theme directory.

It is assuming you're using Lumberjack inside Bedrock. If not, you may need to make some changes to paths in the hatchet file

You can now access the Hatchet CLI from inside your Lumberjack theme directory:

php hatchet list

For a given command called test:command you would run the following:

php hatchet test:command

For a given command called test:command you would run the following:

php hatchet help test:command

To add additional commands to Hatchet add them to config/hatchet.php (create the file if it doesn't exist).

// config/hatchet.php

return [
    'commands' => [
        MyCommand::class,
    ],
];

Create a subclass of Rareloop\Hatchet\Commands\Command:

namespace MyNamespace;

use Rareloop\Hatchet\Commands\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class ControllerMake extends Command
{
    protected $signature = 'test:command {paramName : The description of the parameter}';

    protected $description = 'A description of the command';

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        // Command implementation
    }
}

Hatchet uses the same $signature syntax as Laravel, see here for more information.

Hatchet Command is a subclass of Symfony's Command object, for more information on how to implement the execute() function see here.