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Groups > linux.debian.user > #191054

Re: scriptable way to list packages that are not installed

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On 1/14/2018 4:52 AM, Vasyl Vavrychuk wrote:
> I would like to list not installed packages in my script. Currently I do
> 
>      dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n'
> $PACKAGES | grep -v "^ii" | awk '{print $2}'
> 

As an aside; you don't need grep in this command:

$ <CMD> | awk '!/^ii/{print $2}'

> Problem is that dpkg-query outputs information about no matching
> packages in stderr in a not suitable for scripts way, for example
> 
>      dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n' git gawk cmake
>      un cmake
>      ii git
>      dpkg-query: no packages found matching gawk
> 
> I there any scriptable way to get information about unmatching packages?
> 

You could try to redirect STDERR  to STDOUT:

$ dpkg-query -W -f='${db:Status-Abbrev}${binary:Package}\n' git gawk 
cmake 2>&1 | awk '{print $6}'
git
gawk
cmake

Note that my mailer is folding the command.

-- 
John Doe

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Thread

scriptable way to list packages that are not installed Vasyl Vavrychuk <vvavrychuk@gmail.com> - 2018-01-14 05:00 +0100
  Re: scriptable way to list packages that are not installed john doe <johndoe65534@mail.com> - 2018-01-14 07:40 +0100
    Re: scriptable way to list packages that are not installed john doe <johndoe65534@mail.com> - 2018-01-14 07:50 +0100
      Re: scriptable way to list packages that are not installed Vasyl Vavrychuk <vvavrychuk@gmail.com> - 2018-01-14 21:20 +0100
        Re: scriptable way to list packages that are not installed Michael Lange <klappnase@freenet.de> - 2018-01-14 23:10 +0100
        Re: scriptable way to list packages that are not installed davidson <davidson@freevolt.org> - 2018-01-16 20:40 +0100
          Re: scriptable way to list packages that are not installed davidson@freevolt.org - 2018-01-16 21:00 +0100
            Re: scriptable way to list packages that are not installed Charlie Gibbs <cgibbs@surfnaked.ca> - 2018-01-17 03:20 +0100
              Re: scriptable way to list packages that are not installed The Wanderer <wanderer@fastmail.fm> - 2018-01-17 05:20 +0100
                Re: scriptable way to list packages that are not installed John Hasler <jhasler@newsguy.com> - 2018-01-17 05:50 +0100
              Re: scriptable way to list packages that are not installed Darac Marjal <mailinglist@darac.org.uk> - 2018-01-17 20:40 +0100
                Re: scriptable way to list packages that are not installed davidson <davidson@freevolt.org> - 2018-01-17 21:10 +0100
                Re: scriptable way to list packages that are not installed Charlie Gibbs <cgibbs@surfnaked.ca> - 2018-01-18 07:20 +0100
          Re: scriptable way to list packages that are not installed davidson <davidson@freevolt.org> - 2018-01-16 22:40 +0100
  Re: scriptable way to list packages that are not installed Eduardo M KALINOWSKI <eduardo@kalinowski.com.br> - 2018-01-14 11:40 +0100
  Re: scriptable way to list packages that are not installed Roberto C. Sánchez <roberto@debian.org> - 2018-01-14 14:00 +0100
  Re: scriptable way to list packages that are not installed Bernd Gruber <begruber@mnet-online.de> - 2018-01-14 16:00 +0100

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