init

Example reboot a system withou the systemd

exec /sbin/init 6 

Chnaging root Password

Reboot the system with systemd

exec /usr/lib/systemd/system

• First process on the machine(PID 1)

[!tip] The kernel starts init directly Init starts everything else The mommy of the systems - It take care of orphan process by reasinging the parent - It get rids of the zombie procces - Run Levels(old)