Live Example - "apt-get upgrade" VS "apt-get dist-upgrade"

[Ali Linx (amjjawad)]

Jonathan and Steve,

Thank you so much for explaining :)

Ali


On Sun, Apr 14, 2013 at 1:12 AM, Yorvyk <yorvik.ubunto at googlemail.com>wrote:

> On 13/04/13 22:09, Jonathan Marsden wrote:
>
>> Ali,
>>
>> On 04/13/2013 01:52 PM, Ali Linx (amjjawad) wrote:
>>
>>  apt-get dist-upgrade can upgrade your Kernel.
>>> apt-get upgrade can not.
>>>
>>> That is all :)
>>>
>>
>> Please do
>>
>>    man apt-get
>>
>> to understand the difference between apt-get upgrade and apt-get
>> dist-upgrade.
>>
>> Your above statement perhaps happened to be correct for the exact set of
>> updates available when you tested, but is not generally correct.
>>
>> Jonathan
>>
>>
>>  From the man pages for apt:-
>
> upgrade is used to install the newest versions of all packages currently
> installed on the system from the sources enumerated in
> /etc/apt/sources.list. 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. New versions of currently installed packages that cannot be
> upgraded without changing the install status of another package will be
> left at their current version. An update must be performed first so that
> apt-get knows that new versions of packages are available.
>
> 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. So, dist-upgrade command may remove some packages. 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.
>
> --
> Steve
>
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