How to tell which version of a application is running

[Xen]

Ralf Mardorf schreef op 17-04-2017 16:18:
> On Mon, 17 Apr 2017 16:10:27 +0200, Xen wrote:
>> Aye, the PATH would have been irrelevant since it is probably started
>> by some service file,
>> 
>> BUT I did see no service file in the main package.
> 
> "/etc/xdg/autostart/tracker-store.desktop
> /usr/bin/tracker
> /usr/lib/systemd/user/tracker-store.service
> /usr/lib/systemd/user/tracker-writeback.service" -

The cute thing is that 
http://packages.ubuntu.com/xenial/amd64/tracker/filelist doesn't contain 
it

(notice the xenial, he is on xenial).

So another solution might be to install a newer version by pointing some 
apt repos to Yakkety

then install the newer version, hold it, and put your sources.list back 
to xenial?