WP-CLI: Fully updating a website with one command
How to fully update a website (WordPress core, plugins and translation) using the WordPress Command Line Interface
"WP-CLI is the command-line interface for WordPress. You can update plugins, configure multisite installs and much more, without using a web browser."
The WP-CLI simplifies many repetitive processes during development and provides functionality which isn't available in the admin area.
This is a small one-liner which I find myself using all the time. It allows me to update a website locally (including core WordPress, all plugins and translations) without even logging in, and get to testing the updates as quickly as possible.
You must already have WP-CLI installed, either locally or globally. Open your terminal of choice and change directory to your WordPress install:
Here is some example output from running the command: