Patrice:
After I run the following command I`ve got no output. Is this correct then? I expected a few lines somehow.
su -c "/etc/init.d/tor --verify-config" debian-tor
My bad, shell for debian-tor is set to /bin/false and so it prevents any command from running. Setting shell should "fix" this:
su debian-tor -s /bin/sh -c "tor --verify-config"
-- Ivan Markin