Operations on process

###Process creation

• parent process: creating process
• child process: new process created
• each of these new process may in turn create other process, forming a tree fo process.
• Process Identifier (PID): an Interger number that provides a unique value for each process in the system. -PID can be used as an index to access various attributes of a process withing the kernel.

PPI - parent process identifier

Parent of all the process is called the init process with pid=1

serves a the root parent process for all user process

two children of init- kthreadd and sshd

kthreadd -> parent of all the kernel process

sshd -> responsible for managing clients that directly log onto the system