In this article I'll shed some light on how easy it is to perform a minor Drupal 8 upgrade between versions using free Putty SSH terminal and just a few lines of code.
I assume your Drupal is configured under a VPS (take Linode, for example) and your installation path is /srv/www/
Drupal security updates
By accessing available updates page (admin/reports/updates/update) we can easy update modules by just clicking update button, but if you are asked to update Drupal version a manual operation is asked
Update Drupal 8 core
Now, open Putty, enter your username and password (make sure you login with root privileges). Make sure you change tourgeorgia.eu to your actual domain name
cd /srv/www/tourgeorgia.eu sudo wget https://ftp.drupal.org/files/projects/drupal-8.3.2.tar.gz sudo tar -xvzf drupal-8.3.2.tar.gz sudo cp drupal-8.3.2/* public_html/ -R sudo chown www-data:www-data public_html -R
Now visit /update.php page and make final updates. I there is no errors or issues displayed you should be fine and successfully updated your Drupal version to the latest.