apt Commands

dist-upgrade

In addition to performing the function of upgrade, dist-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.

purge

Purging an installed package will remove the package as well as any associated configuration files.

apt-get --purge remove <package>

In newer distributions, purge can be used as a standalone command:

apt-get purge <package>

Purge can also be used with the autoremove command to remove configuration files associated with packages that are to be removed:

apt-get --purge autoremove