26 May
2014
26 May
'14
2:58 a.m.
Someone suggested "apt-get upgrade". This is
*not* correct (read man
apt-get). Some essential packages might get held back,
leaving a broken
system.
I said it could be used, and it can in various circumstances, I didn't
suggest it was the optimal method.
I have upgraded Debian (starting with Lenny) and Ubuntu (7.04 to 11.10 and
as a development tester from 10.04 to 11.10) from one version to another
with every method available (including apt-get upgrade after adjusting
sources.list) and believe, and stated clearly in my first reply, the best
way is to do a backup of must have settings-files-etc etc etc and then do a
complete clean install.
That way you have a clean system, you have your settings, and you have up
to date software.
Cheers.
Michael.
On 25 May 2014 21:16, David Hare <davidahare(a)gmail.com> wrote:
Here the most simple way is considered the way least
likely to cause
problems.
Time to upgrade my main Wheezy install to R14. This went simply,
flawlessly and quickly:
1. Change TDE sources to R14
2. apt-get update && apt-get dist-upgrade -d
3. Close X (service kdm-trinity stop) and login as root to console
4. apt-get dist-upgrade
5. Reboot to R14! (probably enough to: service tdm-trinity start)
Some post-upgrade cleanups (do this in X):
There will be quite a few TDE "transitional" packages which can now be
removed.
dpkg -l|grep trinity|grep "This can be safely removed"|awk '{print $2}'
>
/tmp/transitional_packages
(su) or (sudo su)
for i in $(cat /tmp/transitional_packages); do apt-get -y --force-yes
purge $i; done
Now, there may be some marked as "automatically installed and no longer
required" that you want to keep. This will be shown in the terminal. To
change their status do, e.g. "apt-mark manual package1 package2 package3"
Job done, everything is nice and clean.
NOTES:
Someone suggested "apt-get upgrade". This is *not* correct (read man
apt-get). Some essential packages might get held back, leaving a broken
system.
Do "apt-get dist-upgrade -d" first: if anything is wrong with the mirrors
things can break. This has happened before.
I'm finding Slavek's mirror faster than than "nightlies"
Major upgrades while X is running or using GUI package managers: If you
really must, good luck to you, you may need it.
There is normally no reason why a Debian system should ever need to be
reinstalled.
No comment on aptitude, I don't normally use it.
Regards,
David
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