laravel_demo/app/Console/Commands/PublishScheduledArticles.php

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use App\Models\Article;

class PublishScheduledArticles extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'app:publish-scheduled-articles';

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

    /**
     * Execute the console command.
     */
    public function handle()
    {
        $pending_up = Article::pending()->get();
        $pending_down = Article::published()->whereNotNull("unpublish_at")->get();

        foreach ($pending_up as $article) {
			if ($article->publish_at->isPast()) {
				$this->info("Publishing [$article->title] at " . now());
				$article->publish();
			}
        }

        foreach ($pending_down as $article) {
			if ($article->unpublish_at->isPast()) {
				$this->info("Taking down [$article->title] at " . now());
				$article->unpublish();
			}
        }
    }
}