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Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?]

From Curt <curty@free.fr>
Newsgroups linux.debian.user
Subject Re: An INCOMPLETE solution - was [Re: Where is data stored when Synaptic scans DVDs?]
Date 2017-03-25 12:00 +0100
Message-ID <toRAm-85v-5@gated-at.bofh.it> (permalink)
References <tm0qt-7b2-1@gated-at.bofh.it> <tnZqh-36m-1@gated-at.bofh.it> <to80y-ML-25@gated-at.bofh.it> <to96h-1uL-1@gated-at.bofh.it> <toF6a-7By-25@gated-at.bofh.it>
Organization Unorganized

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On 2017-03-24, David Wright <deblis@lionunicorn.co.uk> wrote:
>
> Good point. I noticed that the two .bin files in /var/cache/apt/ that
> https://lists.debian.org/debian-user/2017/03/msg00722.html
> mentioned, come and go with apt-get update and clean respectively.
> I had overlooked how ephemeral they are. They're built from scratch at
> the "Reading package lists... Done" line after the Fetched line.

> If your only sources are the DVDs then I can't see a problem with just
> adding those files (or whatever the names are of any files that
> appear—they could differ with apt-cdrom) to your list of files you
> (OP) share between systems. It's tricky to check what's actually
> in them as they're binary databases (what I called "hidden"
> information previously).
>

Actually, srcpkgcache.bin includes the information contained in the files
in /var/lib/apt/lists; that is, all the info you obtain from the internet
via your deb and deb-src lines -- this information changes only on
apt-get update.

pkgcache.bin caches the information in srcpkgcache.bin + the information
extracted from the apt and dpkg status files. This info changes on every
install/remove done by apt or directly by dpkg.

The above scandalously pilfered from David Kalnischkies here:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=566275

You can run 'strings' on pkgcache.bin BTW.

curty@einstein:/var/cache/apt$ strings pkgcache.bin | less

Standard .deb
amd64
/var/lib/apt/lists/httpredir.debian.org_debian_dists_wheezy_main_binary-amd64_Packages
httpredir.debian.org
Debian Package Index
0~r11863-2
games
0ad-data
0~r11863
0~r11863-2
gamin
libboost-signals1.49.0
1.49.0-1
libc6
2.11
libcurl3-gnutls
<etc>

It doesn't appear that tricky.

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Thread

Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-17 14:50 +0100
  Re: Where is data stored when Synaptic scans DVDs? Jonathan Dowland <jmtd@debian.org> - 2017-03-17 15:30 +0100
  Re: Where is data stored when Synaptic scans DVDs? songbird <songbird@anthive.com> - 2017-03-17 17:20 +0100
    Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-17 21:40 +0100
      Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-17 22:00 +0100
        Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-17 23:30 +0100
        Re: Where is data stored when Synaptic scans DVDs? GiaThnYgeia <GiaThnYgeia@openmailbox.org> - 2017-03-18 18:40 +0100
          Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-18 19:00 +0100
            Re: Where is data stored when Synaptic scans DVDs? GiaThnYgeia <GiaThnYgeia@openmailbox.org> - 2017-03-18 20:30 +0100
              Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-19 00:20 +0100
                Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-19 12:40 +0100
                Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-19 14:20 +0100
                Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-19 15:00 +0100
                Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-20 05:30 +0100
                Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-21 00:10 +0100
                Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-21 02:30 +0100
                Re: Where is data stored when Synaptic scans DVDs? Brian <ad44@cityscape.co.uk> - 2017-03-21 21:40 +0100
                Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-22 11:00 +0100
                Re: Where is data stored when Synaptic scans DVDs? Lisi Reisz <lisi.reisz@gmail.com> - 2017-03-21 03:30 +0100
                Re: Where is data stored when Synaptic scans DVDs? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-03-21 13:20 +0100
                Re: Where is data stored when Synaptic scans DVDs? Lisi Reisz <lisi.reisz@gmail.com> - 2017-03-25 13:00 +0100
          Re: Where is data stored when Synaptic scans DVDs? Curt <curty@free.fr> - 2017-03-18 19:10 +0100
      Re: Where is data stored when Synaptic scans DVDs? David Wright <deblis@lionunicorn.co.uk> - 2017-03-18 04:50 +0100
        Re: Where is data stored when Synaptic scans DVDs? Richard Owlett <rowlett@cloud85.net> - 2017-03-18 11:40 +0100
      Re: Where is data stored when Synaptic scans DVDs? songbird <songbird@anthive.com> - 2017-03-18 19:40 +0100
        Re: Where is data stored when Synaptic scans DVDs? deloptes <deloptes@gmail.com> - 2017-03-18 20:30 +0100
          Re: Where is data stored when Synaptic scans DVDs? songbird <songbird@anthive.com> - 2017-03-19 04:00 +0100
  Re: Where is data stored when Synaptic scans DVDs? Curt <curty@free.fr> - 2017-03-18 12:00 +0100
  An INCOMPLETE solution - was [Re: Where is data stored when Synaptic  scans DVDs?] Richard Owlett <rowlett@cloud85.net> - 2017-03-23 02:10 +0100
    Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-23 10:50 +0100
    Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Darac Marjal <mailinglist@darac.org.uk> - 2017-03-23 11:20 +0100
      Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-23 12:30 +0100
        Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-24 22:40 +0100
          Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Curt <curty@free.fr> - 2017-03-25 12:00 +0100
            Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-26 00:30 +0100
              Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Curt <curty@free.fr> - 2017-03-26 13:40 +0200
                Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-28 04:50 +0200
                Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Curt <curty@free.fr> - 2017-03-28 18:20 +0200
                Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-28 21:10 +0200
                Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-29 20:20 +0200
          Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-25 14:10 +0100
            Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] David Wright <deblis@lionunicorn.co.uk> - 2017-03-25 22:10 +0100
              Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Richard Owlett <rowlett@cloud85.net> - 2017-03-26 14:30 +0200
    Re: An INCOMPLETE solution - was [Re: Where is data stored when  Synaptic scans DVDs?] Brian <ad44@cityscape.co.uk> - 2017-03-24 19:40 +0100

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