Updating and Upgrading packages in Debian

Open a Terminal

Firstly you have to update the package list. Type:

sudo apt update

Then, when that has run, you need to upgrade your machine:

sudo apt upgrade

Then to throw the wrapping paper away(!):

sudo apt clean

That’s it, although after a kernel upgrade (ie where a “linux-image” package has been upgraded), it’s a good idea to restart your system so the new kernel can be loaded.