apt-get

Debian and Ubuntu package management utility

Synchronize list of packages and versions available. This should be run first, before running subsequent apt-get commands.

apt-get update

install a new package

apt-get install {{package}}

remove a package

apt-get remove {{package}}

Upgrade installed packages to newest available versions

apt-get upgrade

Upgrade installed packages (like apt-get upgrade) including removing obsolete packages and installing additional packages to meet new package dependencies.

apt-get dist-upgrade