Från man aptitude:
Kod: Markera allt
safe-upgrade
Upgrades installed packages to their most recent version. Installed packages will not
be removed unless they are unused (see the section “Managing Automatically Installed
Packages” in the aptitude reference manual); packages which are not currently
installed will not be installed.
It is sometimes necessary to remove or install one package in order to upgrade
another; this command is not able to upgrade packages in such situations. Use the
full-upgrade command to upgrade as many packages as possible.
full-upgrade
Upgrades installed packages to their most recent version, removing or installing
packages as necessary. This command is less conservative than safe-upgrade and thus
more likely to perform unwanted actions. However, it is capable of upgrading packages
that safe-upgrade cannot upgrade.