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Bug#1069275: apt: random display of the "Summary:" line



On Fri, Apr 19, 2024 at 02:06:44PM +0200, Antonio wrote:
> If you find the "apt autoremove --purge" command in the sequence of the
> commands I have indicated, you will notice that it appears three times:
> 
> - in second position produces this output:
> 
> $ apt autoremove --purge
    ^^^
> Summary:
>    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> 
> - in seventh position it produces the same output
> 
> $ apt autoremove --purge
    ^^^
> Summary:
>    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> 
> but the same command, in the fifteenth position produces a different output:
          ~~~~~~~~~~~~
> 
> $ apt-get autoremove --purge
    ^^^^^^^
> 0 updated, 0 installed, 0 to be removed and 0 not updated.
> 
> what has changed? I would always expect the same output...

(Lets play a game! Lets call it: Spot the difference. 😉)

As Julian already mentioned, "apt" and "apt-get" have different output.
This is intended (for compat) and not random, but yes, it can be a bit
confusing if your muscle memory lets you end up mix their use.

(Note that not only their output is different; they also have behaviour
 differences e.g. "apt-get upgrade" vs "apt upgrade")

As an interactive user, its is probably best to forget apt-{get,cache,…}
exist and get used to 'apt'. If that is missing something compared to
the others feel free to report a bug so we can add it – or suggest an
alternative as sometimes that might be better approach.


Best regards

David Kalnischkies

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