I am trying to debug why certain apps fail to autostart (autostart package).
Premise: My final goal is to understand why the autostart sequence is broken (probably due to certain packages' autostart fail). Debian 8 itself boots normally but autostart features doesn't work properly.
So i wanted to go through boot's log (in /var/log/daemon I didn't find what I'm looking for).
According to Debian Wiki, I should fine boot log at /var/log/boot without any configuration in Debian 8.
However the file is not there.
The wiki also says:
If you use systemd as your init system, you may need to use
systemctlto debug boot problems.
So I tried with
but I get an error
Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.