On 23/01/14 20:51, Bob Bernstein wrote:
A thread about dist-upgrade has me confused. In my experience I have
only ever run 'apt-get dist-upgrade' when I wanted to move from one
release to the next, say, from squeeze to wheezy.
Similarly, if I wanted to insure I had the latest versions of packages
already installed (and any/all security fixes) I have run 'apt-get
update' followed immediately by 'apt-get upgrade.'
But the thread currently underway about dist-upgrade suggests that users
are running it rather routinely, and not at all necessarily to move from
one release to the next.
Can someone please point out what I am missing?
Thanks,
From "man apt-get"
upgrade
(...)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.
dist-upgrade
(...)The dist-upgrade
command may therefore remove some packages. The
When for instance a new version of an already installed package depends
on a previously not installed library, then "apt-get update" cannot
update this pkg. You need "dist-upgrade" for that job.
Just happened on my SID system: shotwell got upgraded to version
0.14.1-3b1, which now depends on (among others) libgphoto2-6, whereas
the previous version depended on libgphoto2-2.
Libphoto2-6 could not have been installed using "upgrade" (it's a new
package rather than a new version of an already installed pkg)
HTH
--
Klaus
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