Question

Which is the parent of all user level processes in the unix system and what is its process id (pid)?

Answer 1

In Unix, the parent of all user-level processes is the init process, with a process ID (PID) of 1.

Step-by-step explanation:

The init process is started by the kernel during the boot process and is the first process to be executed. It has the responsibility of starting and stopping all other processes on the system.

In more modern systems that use Systemd, init has been replaced by systemd process as the first process with PID 1.