How to check updates installed? [duplicate]

You can use two methods here to check if you have any updates pending which would suggest updates were not install and need to be.

Steps:

  1. from dash type software updater and select it
  2. from terminal run sudo apt update

In the first one it would check and tell you if any updates are required.

In the second one it will check to see if your repositories are up to date and tell you if any packages needs updating, then if so you may update using:

sudo apt dist-upgrade

To see the history of your updates:

less /var/log/apt/history.log

Hope that helps.