root@nuc:~# /etc/init.d/rc.local status
● rc-local.service - /etc/rc.local Compatibility
   Loaded: loaded (/etc/systemd/system/rc-local.service; enabled; vendor preset: enabled)
  Drop-In: /lib/systemd/system/rc-local.service.d
           └─debian.conf
   Active: failed (Result: exit-code) since Mo 2016-03-07 12:40:20 CET; 12min ago
  Process: 919 ExecStart=/etc/rc.local start (code=exited, status=1/FAILURE)

Mär 07 12:39:17 nuc systemd[1]: Starting /etc/rc.local Compatibility...
Mär 07 12:40:17 nuc su[1403]: Successful su for duke by root
Mär 07 12:40:17 nuc su[1403]: + ??? root:duke
Mär 07 12:40:17 nuc su[1403]: pam_unix(su:session): session opened for user duke by (uid=0)
Mär 07 12:40:20 nuc rc.local[919]: Can't open pid file ./.sync//sync.pid. Keine Berechtigung
Mär 07 12:40:20 nuc systemd[1]: rc-local.service: Control process exited, code=exited status=1
Mär 07 12:40:20 nuc systemd[1]: Failed to start /etc/rc.local Compatibility.
Mär 07 12:40:20 nuc systemd[1]: rc-local.service: Unit entered failed state.
Mär 07 12:40:20 nuc systemd[1]: rc-local.service: Failed with result 'exit-code'.
root@nuc:~#