How can I determine about a command, that which package provides it, using the command line?

Question

Let's say, I have a command for which I want to know the source code. For example: unity-webapps-runner. I know which unity-webapps-runner tells me where to find, but how to find out with apt-cache that which package installed the binary, so I can run apt-get source <pkg-name>?

Answer 1

dpkg has this option. Read same question here

Do this:

bash:$ dpkg -S unity-webapps-runner
unity-webapps-service: /usr/bin/unity-webapps-runner

Then if you want more information use apt-cache

bash:$ apt-cache showpkg unity-webapps-service

Answer 2

Try this command,

dpkg -S $(which unity-webapps-runner)

The output of the above command shows

unity-webapps-service: /usr/bin/unity-webapps-runner

So unity-webapps-runner was belongs to unity-webapps-service package.

Get the source of unity-webapps-service package by running the below command,

apt-get source unity-webapps-service