Updating Ubuntu

Ensuring that your server is up-to-date with all the security fixes is important.

You can reference this page to learn about Ubuntu's lifecycle and release schedule: https://ubuntu.com/about/release-cycle

sudo apt update        # Fetches the list of available updates
sudo apt upgrade       # Installs some updates; does not remove packages
sudo apt full-upgrade  # Installs updates; may also remove some packages, if needed
sudo apt autoremove    # Removes any old packages that are no longer needed

If reboot required,

sudo reboot