Problems Updating Lubuntu 12.04, 12.10, and 13.04 on Slow Machines
yorvik.ubunto at googlemail.com
Sat Apr 13 20:43:41 UTC 2013
On 13/04/13 21:24, Ioannis Vranos wrote:
> I really messed this text today. The correct version:
> "dist-upgrade" is equivalent to "upgrade" + it removes obsolete
This may be a misunderstanding of what you mean by obsolete but
dist-upgrade doesn't delete obsolete packages.
From synaptic man pages:-
Obsolete or locally installed - Display only packages that are not (for
longer) included in one of the specified repositories.
From the man pages for apt:-
upgrade is used to install the newest versions of all packages
currently installed on the system from the sources enumerated in
/etc/apt/sources.list. Packages currently installed with new
versions available are retrieved and upgraded; under no
circumstances are currently installed packages removed, or packages
not already installed retrieved and installed. New versions of
currently installed packages that cannot be upgraded without
changing the install status of another package will be left at
their current version. An update must be performed first so that
apt-get knows that new versions of packages are available.
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. So, dist-upgrade
command may 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.
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