Veja man apt-get
:
dist-upgrade
dist-upgrade in addition to performing the function of upgrade, also intelligently handles changing
dependencies with new versions of packages; apt-get has a "smart" conflict resolution system, and it will
attempt to upgrade the most important packages at the expense of less important ones if necessary. The
dist-upgrade command may therefore remove some packages. The /etc/apt/sources.list file contains a list of
locations from which to retrieve desired package files. See also apt_preferences(5) for a mechanism for
overriding the general settings for individual packages.