How to query for packages info from the command line?

Dear Uqbar what type of informations you want? Do you search info about installed?
If you search info about package try with apt, for example:

sudo apt-cache search foo

if the list is too long you can use
sudo apt-cache search foo | grep -rin something

I hope that it can help you.

Regards-

What about the infos (description, file list etc.) about a specific package?
Grazie!

then you replace "something" for the packagename?

: http://www.howtogeek.com/howto/ubuntu/search-for-install-packages-from-the-ubuntu-command-line/

Searching terms is only 50% of the question.
Ache the suggested command fits well.
The remaining 50% is to get all the available infos for a certain package (version, repository, description, file list etc.)

navigate via nautilus to /var/lib/dpkg/info rightabove===>search option.(button)
you will find all packages+version, etc.

Sounds quite primitive, though. Bit it's better than nothing.

Il giorno 19 gen, 2010 6:42 p., "leoquant" <
<email address hidden>> ha scritto:

Your question #97948 on yelp in ubuntu changed:
https://answers.edge.launchpad.net/ubuntu/+source/yelp/+question/97948

   Status: Open => Answered

leoquant proposed the following answer:
navigate via nautilus to /var/lib/dpkg/info rightabove===>search
option.(button)
you will find all packages+version, etc.

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Try:

apt-cache show firefox

Thanks Sam, that solved my question.