APT commands
To upgrade all the packages on your system, and, if needed for a package upgrade, installing extra packages or removing packages, run:
sudo apt-get dist-upgrade
Update the list of packages known by your system:
sudo apt-get update
(Execute this regularly to update your package lists)
Upgrade all the packages on your system (without installing extra packages or removing packages):
sudo apt-get upgrade
To install a package and all its dependencies:
sudo apt-get install packagename
Remove a package:
sudo apt-get remove packagename
Remove a package and its configuration files:
sudo apt-get --purge remove packagename
