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Re: apt pinning: find out from which system version is a package

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On Mon 29 Apr 2019 at 05:30:30 (+0200), Emanuel Berg wrote:
> With apt pinning [1], in /etc/apt/preferences ,
> I have learned that one can have certain packs
> from another release than the rest of the
> system, seemlessly (?) with apt-get and the
> other tools, for example like this for
> w3m-el-snapshot:
> 
>     Package: *
>     Pin: release a=testing
>     Pin-Priority: -10
> 
>     Package: w3m-el-snapshot
>     Pin: release a=testing
>     Pin-Priority: 800
> 
> But is there a way to find out/confirm from
> which release is a certain pack? I know about
> 'aptitude show' but save for the version, which
> I suppose one could Google and compare (poor
> man's solution IMO), it doesn't seem to say
> what I can see.
> 
> Neither does 'dpkg -l'.
> 
> So is there a way to do this with shell tool(s)?

apt-show-versions can give you a good idea. Occasionally,
and after major upgrades, I archive the output of:

$ apt-cache dump | grep -A 2 '^Package:' | grep -B 2 '^ File:' | sed -e 'N;N;s/\n/ /g;s/ \+/ /g;N' | grep -v '^--' | sort >> "$Unique1"
$ dpkg-query -W -f '^Package: ${Package} \n' | grep --file=- "$Unique1" | sort

Cheers,
David.

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apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-04-29 05:40 +0200
  Re: apt pinning: find out from which system version is a package Jonas Smedegaard <jonas@jones.dk> - 2019-04-29 07:40 +0200
    Re: apt pinning: find out from which system version is a package "Alexander V. Makartsev" <avbetev@gmail.com> - 2019-04-29 09:20 +0200
      Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 03:40 +0200
    Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 03:40 +0200
      Re: apt pinning: find out from which system version is a package Greg Wooledge <wooledg@eeg.ccf.org> - 2019-05-03 14:40 +0200
  Re: apt pinning: find out from which system version is a package David Wright <deblis@lionunicorn.co.uk> - 2019-04-29 15:50 +0200
    Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 03:50 +0200
      Re: apt pinning: find out from which system version is a package <tomas@tuxteam.de> - 2019-05-03 08:50 +0200
        Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 23:20 +0200
          Re: apt pinning: find out from which system version is a package David Wright <deblis@lionunicorn.co.uk> - 2019-05-04 17:30 +0200
      Re: apt pinning: find out from which system version is a package Greg Wooledge <wooledg@eeg.ccf.org> - 2019-05-03 14:40 +0200
      Re: apt pinning: find out from which system version is a package David Wright <deblis@lionunicorn.co.uk> - 2019-05-03 14:50 +0200
  Re: apt pinning: find out from which system version is a package Francisco M Neto <fmneto@fmneto.com.br> - 2019-04-29 23:20 +0200
    Re: apt pinning: find out from which system version is a package Toni Mas <antomassol@gmail.com> - 2019-04-29 23:20 +0200
      Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 04:10 +0200
      Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 04:10 +0200
    Re: apt pinning: find out from which system version is a package Emanuel Berg <moasenwood@zoho.eu> - 2019-05-03 04:00 +0200

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