WP-CLI is the command-line interface for WordPress. Using text commands, WP-CLI can quickly perform many WordPress tasks that would take much longer via the WordPress dashboard.
What is a Command Line?
Confused? Let’s break it down. First of all, what is a command line? It is a “simple” text interface for a computer. Your desktop and laptop have command line interfaces (whether they run Windows or Mac OS). And your web server also has one.
The Secure Shell (SSH) command line on a Unix web server, looks something like this:
From this command line, you can use WP-CLI commands, such as the following that will install and activate the Google Authenticator plugin from the WordPress repository using the plugin’s slug “google-authenticator”: