Install
curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar sudo mv wp-cli.phar /usr/local/bin/wp sudo chmod +x /usr/local/bin/wp wp --info
Update site
wp core update wp plugin update --all wp theme update --all
Manage users
wp user list wp user update 2 --user_pass=s3cur3