Hi guys. I have Ubuntu 16.04. when apt-get install -f get:
Configured package udev (228-5ubuntu2) ...
add group: «input» Group already exists and is the system. Shutdown.
update-initramfs: deferring update (trigger activated)
insserv: Service mountkernfs has to be enabled to start service udev
insserv: exiting now!
update-rc.d: error: insserv rejected the script header
dpkg: error processing udev package (--configure):