[Ubuntu] How to handle messages saying packages can be updated or updates are security updates

I’ll introduce what you should do when messages like “packages can be updated.” or “updates are security updates.” are displayed in the terminal on Ubuntu.

Example message

Welcome to Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-72-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  Get cloud support with Ubuntu Advantage Cloud Guest:
    http://www.ubuntu.com/business/services/cloud

42 packages can be updated.
0 updates are security updates.

Solution: apt-get update/upgrade

The solution is simply to run apt-get update and apt-get upgrade.

sudo apt-get update
sudo apt-get upgrade

Keep Ubuntu package updates current regularly.

That’s all from the Gemba.