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prevent "dpkg -l" from showing nonexisting packages

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  prevent "dpkg -l" from showing nonexisting packages kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2017-03-11 16:30 +0100
    Re: prevent "dpkg -l" from showing nonexisting packages Brian <ad44@cityscape.co.uk> - 2017-03-11 18:10 +0100
      Re: prevent "dpkg -l" from showing nonexisting packages kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2017-03-13 05:30 +0100
        Re: prevent "dpkg -l" from showing nonexisting packages Vincent Lefevre <vincent@vinc17.net> - 2017-03-13 16:00 +0100
          Re: prevent "dpkg -l" from showing nonexisting packages Cindy-Sue Causey <butterflybytes@gmail.com> - 2017-03-13 20:50 +0100

#178681 — prevent "dpkg -l" from showing nonexisting packages

The output from "dpkg -l" is showing some packages that are not
present in the repositories I track. How to change this behaviour so
it only shows packages that are available in repositories?

Consider for example

 % dpkg -l \*flash\*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                 Version         Architecture    Description
+++-====================-===============-===============-==============================================
un  flashplayer-mozilla  <none>          <none>          (no
description available)
un  flashplugin          <none>          <none>          (no
description available)
rc  flashplugin-nonfree  1:3.7           amd64           Adobe Flash
Player - browser plugin
un  hal-flash            <none>          <none>          (no
description available)
un  libflash-mozplugin   <none>          <none>          (no
description available)

which shows flashplayer-mozilla in the output. But that package does
not exist in the repositories.

% rmadison flashplayer-mozilla
<returns no output>

My repositories are
% inxi -r
Repos:     Active apt sources in file: /etc/apt/sources.list
           deb http://httpredir.debian.org/debian/ stretch main contrib non-free
           deb-src http://httpredir.debian.org/debian/ stretch main
contrib non-free
           deb http://httpredir.debian.org/debian/ stretch-updates
main contrib non-free
           deb-src http://httpredir.debian.org/debian/ stretch-updates
main contrib non-free
           deb http://security.debian.org/ stretch/updates main contrib non-free
           deb-src http://security.debian.org/ stretch/updates main
contrib non-free
           deb http://debug.mirrors.debian.org/debian-debug/
stretch-debug main contrib non-free

 % uname -a
Linux hogwarts 4.9.0-2-amd64 #1 SMP Debian 4.9.13-1 (2017-02-27)
x86_64 GNU/Linux


thanks
raju
-- 
Kamaraju S Kusumanchi | http://raju.shoutwiki.com/wiki/Blog

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#178683

On Sat 11 Mar 2017 at 10:21:13 -0500, kamaraju kusumanchi wrote:

> The output from "dpkg -l" is showing some packages that are not
> present in the repositories I track.

You are referring to the repositories you track now. What about those
repositories you no longer track. (Does deb-multimedia ring any bells?)

> 				       How to change this behaviour so
> it only shows packages that are available in repositories?

Impossible. 'dpkg -l' only shows packages which have files on the system.

Perhaps you would like to reframe your query?

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#178741

On Sat, Mar 11, 2017 at 12:08 PM, Brian <ad44@cityscape.co.uk> wrote:
> On Sat 11 Mar 2017 at 10:21:13 -0500, kamaraju kusumanchi wrote:
>
>> The output from "dpkg -l" is showing some packages that are not
>> present in the repositories I track.
>
> You are referring to the repositories you track now. What about those
> repositories you no longer track. (Does deb-multimedia ring any bells?)
>

You are right. I did add deb-multimedia at some point and then
commented it out now. Those packages may be lying around in my system
now.

>>                                      How to change this behaviour so
>> it only shows packages that are available in repositories?
>
> Impossible. 'dpkg -l' only shows packages which have files on the system.
>
> Perhaps you would like to reframe your query?
>

Let me rephrase my question. If "dpkg -l" cannot do it, is there some
other command that will only show packages from the current
repositories?

If "dpkg -l" only shows packages which files on the system, what files
should I remove, so that packages such as flashplayer-mozilla will not
show up in its output? If there is no generic way of doing it, can I
do it just for just flashplayer-mozilla package?

thanks
raju
-- 
Kamaraju S Kusumanchi | http://raju.shoutwiki.com/wiki/Blog

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#178763

On 2017-03-13 00:23:54 -0400, kamaraju kusumanchi wrote:
> On Sat, Mar 11, 2017 at 12:08 PM, Brian <ad44@cityscape.co.uk> wrote:
> > On Sat 11 Mar 2017 at 10:21:13 -0500, kamaraju kusumanchi wrote:
> >>                                      How to change this behaviour so
> >> it only shows packages that are available in repositories?
> >
> > Impossible. 'dpkg -l' only shows packages which have files on the system.
> >
> > Perhaps you would like to reframe your query?
> 
> Let me rephrase my question. If "dpkg -l" cannot do it, is there some
> other command that will only show packages from the current
> repositories?

Perhaps apt-show-versions, which can check whether a package
is in a repository. You will need options and/or grep.

For instance, on one of my machines, I get in the output:

unison2.40.102:amd64 2.40.102-3 installed: No available version in archive

i.e. apt-show-versions detects that this package is installed,
but no longer in any declared repository.

AFAIK, aptitude can do similar things.

> If "dpkg -l" only shows packages which files on the system, what files
> should I remove, so that packages such as flashplayer-mozilla will not
> show up in its output?

"rc" means that the package has been removed but its conffiles are
still there (i.e. the package has not been "purged").

You can get the list of remaining files with:

  dpkg -L <package_name>

You can purge the package (i.e. remove all the conffiles) with:

  dpkg -P <package_name>

> If there is no generic way of doing it, can I do it just for just
> flashplayer-mozilla package?

Note: There is a package that downloads the non-free Flash plugin.
These files are not from the package, thus will not be detected
by dpkg. If you have used it and purged the package, you should
manually check that everything has been cleaned up (perhaps this
package ensures that, though).

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

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#178778

On 3/13/17, Vincent Lefevre <vincent@vinc17.net> wrote:
> On 2017-03-13 00:23:54 -0400, kamaraju kusumanchi wrote:
>> Let me rephrase my question. If "dpkg -l" cannot do it, is there some
>> other command that will only show packages from the current
>> repositories?
>
> Perhaps apt-show-versions, which can check whether a package
> is in a repository. You will need options and/or grep.
>
> For instance, on one of my machines, I get in the output:
>
> unison2.40.102:amd64 2.40.102-3 installed: No available version in archive
>
> i.e. apt-show-versions detects that this package is installed,
> but no longer in any declared repository.


Ooohhh, NICE find! I never would have thought about it because I've
never seen apt-show-versions produce that output.

I started to write: Is there a way to perform maybe a "reverse" grep
sent to a file that was an "apt-show-versions -u" (or any other) query
with everything EXCEPT those packages that return "No available
version in archive"?

And then I went to "man grep" = THERE IS A WAY!!!!

At least it worked on my end.

I don't have anything that's not from that one-liner repository I use
(in /etc/apt/sources.list) so I tried:

apt-show-versions | grep -v "uptodate" -i

That "-v" is interchangeable with "--invert-match". Both allow you to:
"Invert the sense of matching, to select non-matching lines"

Better yet, I just did:

apt-show-versions | grep -v "uptodate" -i > notUpToDate20170313

THAT... returned ONLY the lines that did NOT contain "uptodate" out of
the tons of packages I have installed AND then sent that query to a
file that is easier FOR ME to read and manipulate (versus seeing it on
the terminal display).

I A-SUME but cannot test drive that the following MIGHT be usable for
someone somewhere... some day:

apt-show-versions | grep -v "No available version in archive" -i >
thePackagesIwanted

OR, depending on your need, maybe something like:

apt-show-versions -u | grep -v "No available version in archive" -i >
thePackagesIwanted

Yes, no, maybe so?

For those who have not seen the ">" yet, that was a tremendous tip I
learned on the fly years ago. It outputs what you're doing to a file.

There's a no-brainer "caveat" to using that. You must have rights to
access the directory that you're issuing that command from, else it
WILL fail. E.g. I can't issue that command while my terminal is
showing that I'm sitting in the /etc directory. It DOES work if I
change the file path to "~/notUpToDate20170313", e.g.:

elf@northpole:/etc$ apt-show-versions | grep -v "uptodate" -i >
~/notUpToDate20170313

I say again....... Oooohhhh :)

Cindy :)

-- 
Cindy-Sue Causey
Talking Rock, Pickens County, Georgia, USA

* runs with duct tape *

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