WordPress CLI is the command-line interface for WordPress. You can update plugins, configure multisite installations and much more, without using a web browser.
Installing WordPress CLI in your Ubuntu server isn't that hard.
Start by downloading the script:
curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar
To check everything is working run the following command:
php wp-cli.phar --info
To make the command globally available we'll have to move the .phar script to the /usr/local/bin folder.
Run the following commands to make this available:
chmod +x wp-cli.phar sudo mv wp-cli.phar /usr/local/bin/wp
Now you can run this command anywhere you are in the server:
Updating the CLI
Run the following command to update the CLI script:
wp cli update
Or run the installation script again, this will also update you to the latest version.