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

[Antonio <antdev66@gmail.com>]

Hi,
I noticed this by chance, so I did some testing to find why the same 
command produces two different outputs (note that I ran the commands one 
after the other, as root, in the same session).

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...

It seems like this is a random issue because it doesn't always happen 
(and I don't know how to reproduce it).


Il 19/04/24 13:28, Julian Andres Klode ha scritto:
> On Fri, Apr 19, 2024 at 10:06:31AM +0200, Antonio wrote:
> > Package: apt
> > Version: 2.9.1
> > Severity: minor
> > X-Debbugs-Cc: antdev66@gmail.com
> >
> > Dear Maintainer,
> > I report a minor bug on apt that I sometimes get by running the commands
> > below
> > in sequence.
> >
> > Note that in the last commands the "Summary:" line is not displayed whereas
> > previously, with the same commands, it was displayed.
> >
> > I tried this sequence as root; as a user I see that the word "Summary" never
> > appears.
> >
> > Seems to be a random problem.
> Thank you for your bug report,
>
> looking at your output, everything seems to be in order:
>
> All your apt(8) executions use the apt(8) modern interface,
> and all your apt-get(8) executions use the classic interface
> - as they should for backwards-compatibility.
>
> Is it possible your muscle memory is playing tricks on you, making
> you type sudo apt-get whereas you use apt as a user?
>
> But maybe I missed it, so do double check.
>
> Have a nice day!
>
> > -- SEQUENCE --
> >
> > $ apt autoremove
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> >
> > $ apt autoremove --purge
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> >
> > $ sudo apt autoremove --purge
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> >
> > $ (sudo apt autoremove --purge)
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
>
> These are all apt(8) with the modern interface.
>
> > $ gawk '{print}'< <(sudo apt-get autoremove; sudo apt-get clean; sudo
> > apt-get
> > autoclean; sudo apt-get -f install; sudo apt-get check)
> > Lettura elenco dei pacchetti...
> > Generazione albero delle dipendenze...
> > Lettura informazioni sullo stato...
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> > Lettura elenco dei pacchetti...
> > Generazione albero delle dipendenze...
> > Lettura informazioni sullo stato...
> > Lettura elenco dei pacchetti...
> > Generazione albero delle dipendenze...
> > Lettura informazioni sullo stato...
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> > Lettura elenco dei pacchetti...
> > Generazione albero delle dipendenze...
> > Lettura informazioni sullo stato...
> These are all apt-get(8) with the classic interface.
>
> > $ apt autoremove
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> >
> > $ apt autoremove --purge
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> >
> > $ (sudo apt autoremove --purge)
> > Summary:
> >    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
> These are all apt(8) and all have the summary line.
>
> > $ sudo apt-get autoremove; sudo apt-get clean; sudo apt-get autoclean; sudo
> > apt-get -f install; sudo apt-get check
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> >
> > $ sudo apt-get autoremove
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> >
> > $ sudo apt-get autoremove
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> >
> > $ sudo apt-get autoremove --purge
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> >
> > $ sudo apt-get autoremove --purge
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> >
> > $ apt-get autoremove
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> >
> > $ apt-get autoremove --purge
> > 0 aggiornati, 0 installati, 0 da rimuovere e 0 non aggiornati.
> These are all apt-get(8) which uses the classic interface.