APT (Advanced Packaging Tool) is a powerful package management system, on which the graphical programs described above like Add/Remove Applications and Synaptic are based. APT automatically handles dependencies and performs other operations on system packages to allow the installation of the desired package/s.
Note: Running APT requires administrative privileges (see the section called "Root And Sudo").
Some common commands that can be used with APT:
sudo apt-get install packagename
sudo apt-get remove packagename
Retrieve new lists of packages:
sudo apt-get update
Upgrade system with available updates:
sudo apt-get upgrade
List further commands and options:
Tip: For further information about the use of APT, read the comprehensive Debian APT User Manual.