laravel-dot-env-gen is a Laravel package to automatically generate and regenerate your .env file.
To give an example of how this could be beneficial lets pretend we are cloning an existing Laravel application and we are unsure of all the environmental variables that need to be defined.
By running php artisan env:gen the package will automatically scan your code base and create a new file .env.gen which you can then rename and fill out the needed fields for your environment. It will also report any env variables that are defined but are not used in the source code.
Laravel Dot Env Generator is a post from Laravel News.