[Live-demo] Dist-upgrade

[Alex Mandel]

Alex Mandel wrote:
> Hamish wrote:
>> Alex wrote:
>>> More in general in setup.sh shouldn't we use apt-get
>>> dist-upgrade instead of just upgrade to play it safe?
>>
>> don't you mean "apt-get safe-upgrade"  ??
>>
>>
>> dist-upgrade is used to update from 9.10 to 10.04 once it is released. and this generally requires a bit of handholding and
>> care so should not be done automatically.
>>
>> if you need dist-upgrade it indicates that something is broken
>> or not fully upgraded from e.g. 8.10 if your setup.
>>
>> if ubuntu is releasing in-distrib security updates which require
>> dist-upgrade to work, well fooey on them.
>>
>>
>> ?,
>> Hamish
> 
> To clarify the naming of commands is kind of misleading:
> dist-upgrade is not the command on Ubuntu to change from 9.04 to 9.10
> (example). It's actually what you would think would be called
> smart-upgrade or safe-upgrade. It actually matches the synaptic smart
> update option.
> 
> "dist-upgrade
>            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. 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."
> 
> safe-upgrade is an aptitude command not an apt command, go figure...
> 
> Alex

Note:
I realize it might behave the way you suggested if one manually changes
the source list to point to the next version of Ubuntu.

Alex