upgrade vs dist-upgrade
milouny at gmx.net
Mon Apr 10 18:00:04 UTC 2006
Daniel Carrera wrote:
> I was hoping someone could tell me more about the difference between
> an upgrade and a dist-upgrade.
> I know that upgrade is safer, I know that dist-upgrade is intended
> for upgrading the distro (e.g. Breezy to Dapper). I know that
> dist-upgrade does a more agressive dependency resolution and that
> might break things, but this agressiveness is necessary when you
> upgrade to a new distro (e.g. Dapper).
> But could someone give me a concrete example (made up examples are
> fine) of something that dist-upgrade would do but upgrade would not?
> I want to know more about what's happening under the hood.
> Thank you for the help.
> Cheers, Daniel.
from `man apt-get':
"dist-upgrade in addition to performing the function of upgrade,
also intelligently handles changing dependencies with new ver‐
sions of packages; apt-get has a "smart" conflict resolution
system, and it will attempt to upgrade the most important pack‐
ages at the expense of less important ones if necessary. The
/etc/apt/sources.list file contains a list of locations from
which to retrieve desired package files. See also apt_prefer‐
ences(5) for a mechanism for overriding the general settings for
To satisfy dependencies dist-upgrade can remove packages. That's the
reason it can break stuff.
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