App version & installed?

[Ralf Mardorf]

First off all...

[weremouse at moonstudio src]$ apt list -qqa claws-mail-*
[weremouse at moonstudio src]$ apt list -qqa 'claws-mail-*'
claws-mail-acpi-notifier/xenial 3.13.2-1ubuntu1 amd64

claws-mail-address-keeper/xenial 3.13.2-1ubuntu1 amd64
[snip]

...it could make a big difference if you are using ' ' or not.

You could have a program installed, e.g. "dmesg", but no package
"dmesg".

[weremouse at moonstudio ~]$ dmesg -V
dmesg from util-linux 2.27.1

:D

[weremouse at moonstudio ~]$ apt list -qqa dmesg

No output ;).

Assuming it wouldn't show "from util-linux" you could workaround by e.g.

[weremouse at moonstudio ~]$ apt list -qqa $(dpkg -S $(which dmesg)|cut -d: -f1)
util-linux/xenial-updates,now 2.27.1-6ubuntu3.6 amd64 [installed]
util-linux/xenial 2.27.1-6ubuntu3 amd64

If you don't remember the exact name, you also could use a wildcard or
wildcards first...

[weremouse at moonstudio ~]$ apt list -qqa 'linux-low*'
linux-lowlatency/xenial-updates,now 4.4.0.135.141 amd64 [installed]
linux-lowlatency/xenial-security 4.4.0.134.140 amd64
linux-lowlatency/xenial 4.4.0.21.22 amd64

linux-lowlatency-hwe-16.04/xenial-updates,xenial-security 4.15.0.34.56 amd64

linux-lowlatency-hwe-16.04-edge/xenial-updates,xenial-security 4.15.0.34.55 amd64

linux-lowlatency-lts-utopic/xenial-updates 4.4.0.135.141 amd64
linux-lowlatency-lts-utopic/xenial-security 4.4.0.134.140 amd64
linux-lowlatency-lts-utopic/xenial 4.4.0.21.22 amd64

linux-lowlatency-lts-vivid/xenial-updates 4.4.0.135.141 amd64
linux-lowlatency-lts-vivid/xenial-security 4.4.0.134.140 amd64
linux-lowlatency-lts-vivid/xenial 4.4.0.21.22 amd64

linux-lowlatency-lts-wily/xenial-updates 4.4.0.135.141 amd64
linux-lowlatency-lts-wily/xenial-security 4.4.0.134.140 amd64
linux-lowlatency-lts-wily/xenial 4.4.0.21.22 amd64

linux-lowlatency-lts-xenial/xenial-updates 4.4.0.135.141 amd64
linux-lowlatency-lts-xenial/xenial-security 4.4.0.134.140 amd64
linux-lowlatency-lts-xenial/xenial 4.4.0.21.22 amd64

[weremouse at moonstudio ~]$ apt list -qqa 'linux-lowlatency'
linux-lowlatency/xenial-updates,now 4.4.0.135.141 amd64 [installed]
linux-lowlatency/xenial-security 4.4.0.134.140 amd64
linux-lowlatency/xenial 4.4.0.21.22 amd64

...and continue without a wildcard.

[weremouse at moonstudio ~]$ apt show -a 'linux-lowlatency'
Package: linux-lowlatency
Version: 4.4.0.135.141
Priority: optional
Section: kernel
Source: linux-meta
Origin: Ubuntu
Maintainer: Ubuntu Kernel Team <kernel-team at lists.ubuntu.com>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 14.3 kB
Depends: linux-image-lowlatency (= 4.4.0.135.141), linux-headers-lowlatency (= 4.4.0.135.141)
Supported: 5y
Download-Size: 1,790 B
APT-Manual-Installed: yes
APT-Sources: http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
Description: Complete lowlatency Linux kernel
 This package will always depend on the latest complete lowlatency Linux kernel
 available.

Package: linux-lowlatency
Version: 4.4.0.134.140
Priority: optional
Section: kernel
Source: linux-meta
Origin: Ubuntu
Maintainer: Ubuntu Kernel Team <kernel-team at lists.ubuntu.com>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 14.3 kB
Depends: linux-image-lowlatency (= 4.4.0.134.140), linux-headers-lowlatency (= 4.4.0.134.140)
Supported: 5y
Download-Size: 1,786 B
APT-Sources: http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
Description: Complete lowlatency Linux kernel
 This package will always depend on the latest complete lowlatency Linux kernel
 available.

Package: linux-lowlatency
Version: 4.4.0.21.22
Priority: optional
Section: kernel
Source: linux-meta
Origin: Ubuntu
Maintainer: Ubuntu Kernel Team <kernel-team at lists.ubuntu.com>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 11.3 kB
Depends: linux-image-lowlatency (= 4.4.0.21.22), linux-headers-lowlatency (= 4.4.0.21.22)
Supported: 5y
Download-Size: 1,788 B
APT-Sources: http://de.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
Description: Complete lowlatency Linux kernel
 This package will always depend on the latest complete lowlatency Linux kernel
 available.