On 10/28/2017 09:53 PM, david wrote:
dist-upgrade is the mechanism Ubuntu uses when a new LTS version comes
out and you choose to upgrade to the new version, I think.
If you don't update to totally new sources, however, it merely handles
changing dependencies from one version of an installed package to another.
dist-upgrade
In addition to performing the function of upgrade, this option 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.
Anyway, it will happily remove installed programs if it decides that
some other program it is upgrading requires it to be removed. Or (I
think) if the installed program isn't in the repository anymore? Been
awhile since I've used it. It used to produce disasters for me in Ubuntu.
I've been using it routinely for countless years. I probably need it
due to having a lot of random stuff installed from PPAs.
Anyhoo.....
--
D. Michael McIntyre
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