So you downloaded Knoppix and realized that it is a little bit rusty. There is a way to make it fresh and update all the packages with two simple commands.
First you need to Refresh the packages database. Go to terminal and type the following command and press enter.
sudo apt-get update
This will initiate an activity on the terminal that will download the latest packages information. This will take a few minutes. After the activity finishes, you will have the latest packages information. This is time to Upgrade the packages that are already installed in your Knoppix system to the latest versions that are available in online repositories.
Simply, type in the following command in terminal:
sudo apt-get upgrade
This will initiate a download activity on your terminal that will download all the upgradable packages from online repositories. This will take longer than the “update” activity.
At the end, you will have the latest packages installed and you will be running smooth!