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Re: How can I see only the latest change log of packages before update ?

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  Re: How can I see only the latest change log of packages before  update ? David Wright <deblis@lionunicorn.co.uk> - 2020-03-24 02:50 +0100
    Re: How can I see only the latest change log of packages before update  ? The Wanderer <wanderer@fastmail.fm> - 2020-03-29 20:50 +0200
      Re: How can I see only the latest change log of packages before  update ? Andrei POPESCU <andreimpopescu@gmail.com> - 2020-03-29 21:20 +0200
        Re: How can I see only the latest change log of packages before update  ? The Wanderer <wanderer@fastmail.fm> - 2020-03-29 21:30 +0200

#220343 — Re: How can I see only the latest change log of packages before update ?

On Tue 24 Mar 2020 at 00:35:39 (+0200), Anastasios Lisgaras wrote:
> 
> My update/upgrade system script is about that :
> sudo apt update && sudo apt list --upgradable -a && sudo apt
> dist-upgrade -y && sudo apt autoremove -y && sudo apt autoclean -y &&
> sudo apt clean -y
> 
> But I want for *each* package that has an update available, before I
> update it to see its changes.

Then you have to split the upgrade command into a download-only part
(-d in apt-get, and I assume it's the same in apt), and the installing
part itself (with no -d).

> I found for that (maybe) two tools :
> * apt-listchanges
> * changelog
> 
> 1) The "apt-listchanges" tool I cannot understand how it is used
> ```
> apt-listchanges thunderbird
> apt-listchanges: thunderbird does not have '.deb' extension
> ```

man apt-listchanges says:

    apt-listchanges [[options...]] {[--apt] | [package.deb...]}
                                                      ↑↑↑↑

so you have to give it the actual filename (after the download part,
of course), and not just the name of the package.

> 2) With the "changelog" I got the change logs, but i think i'm not just
> getting the last ones ..
> 
> apt changelog openssh-client : https://pastebin.com/raw/15rCqULj
> apt changelog thunderbird : https://pastebin.com/raw/RdfnwtDD
> 
> I want to see *only* the *latest* change logs for *each* update
> available package.

This time, the bare package name is sufficient, and by default you get
the installed version's changelog. You have to add options (like those
for the install command) so it can download a different version to
give you the information for packages not already installed on the system.

But, in view of your upgrade script, you obviously don't need
changelog, because apt-listchanges will fit nicely between your
apt -d dist-upgrade   and   apt dist-upgrade   commands.

Cheers,
David.

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#220680 — Re: How can I see only the latest change log of packages before update ?

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On 2020-03-29 at 14:42, Anastasios Lisgaras wrote:

> On 3/24/20 3:46 AM, David Wright wrote:
>
>> Then you have to split the upgrade command into a download-only part
>> (-d in apt-get, and I assume it's the same in apt), and the installing
>> part itself (with no -d).
> 
>> man apt-listchanges says:
>> 
>>     apt-listchanges [[options...]] {[--apt] | [package.deb...]}
>>                                                       ↑↑↑↑
>> 
>> so you have to give it the actual filename (after the download part,
>> of course), and not just the name of the package.
>> 
> 
> Okay, How can I do that for each upgradeable package ?

On my system, when I run

apt-get dist-upgrade

and say "yes" to the list of packages, the following things happen:

* apt-get downloads all the packages, but does not install them yet.
* apt-listchanges kicks in, automatically extracts and/or downloads the
  necessary changelogs for all the packages just downloaded, and
  presents just the new parts (relative to the already-installed
  package version).
* After I exit the pager which displays the changelogs, apt-listchanges
  gives me a prompt to confirm whether I want to continue the upgrade
  or not.
* If I say yes, the upgrade proceeds. If I say no, apt-listchanges
  aborts the upgrade process.

This sounds like exactly what you want, handled purely automatically. Do
you not get this behavior (or a comparable one) with apt-listchanges
installed on your system?

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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#220683

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On Du, 29 mar 20, 14:47:57, The Wanderer wrote:
> 
> On my system, when I run
> 
> apt-get dist-upgrade
> 
> and say "yes" to the list of packages, the following things happen:
> 
> * apt-get downloads all the packages, but does not install them yet.
> * apt-listchanges kicks in, automatically extracts and/or downloads the
>   necessary changelogs for all the packages just downloaded, and
>   presents just the new parts (relative to the already-installed
>   package version).
> * After I exit the pager which displays the changelogs, apt-listchanges
>   gives me a prompt to confirm whether I want to continue the upgrade
>   or not.
> * If I say yes, the upgrade proceeds. If I say no, apt-listchanges
>   aborts the upgrade process.
> 
> This sounds like exactly what you want, handled purely automatically. Do
> you not get this behavior (or a comparable one) with apt-listchanges
> installed on your system?

As far as I recall, by default apt-listchanges displays only NEWS items, 
not changelogs (which reminds me I should install it on my systems).

Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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#220684 — Re: How can I see only the latest change log of packages before update ?

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On 2020-03-29 at 15:10, Andrei POPESCU wrote:

> On Du, 29 mar 20, 14:47:57, The Wanderer wrote:
> 
>> On my system, when I run
>> 
>> apt-get dist-upgrade
>> 
>> and say "yes" to the list of packages, the following things happen:
>> 
>> * apt-get downloads all the packages, but does not install them yet.
>> * apt-listchanges kicks in, automatically extracts and/or downloads the
>>   necessary changelogs for all the packages just downloaded, and
>>   presents just the new parts (relative to the already-installed
>>   package version).
>> * After I exit the pager which displays the changelogs, apt-listchanges
>>   gives me a prompt to confirm whether I want to continue the upgrade
>>   or not.
>> * If I say yes, the upgrade proceeds. If I say no, apt-listchanges
>>   aborts the upgrade process.
>> 
>> This sounds like exactly what you want, handled purely automatically. Do
>> you not get this behavior (or a comparable one) with apt-listchanges
>> installed on your system?
> 
> As far as I recall, by default apt-listchanges displays only NEWS items, 
> not changelogs (which reminds me I should install it on my systems).

If so, that must be a change in defaults from when I installed it. I
don't remember ever adjusting configuration in this regard (although
that's not an absolutely conclusive data point, as my memory is not
perfect).

The man page confirms that, though; it says that NEWS is the default,
and this can be changed with the 'which' option. Indeed, my
/etc/apt/listchanges.conf includes a line reading 'which=both'.

For the OP: you might want to try with that setting, and see whether the
results match what you want.

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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