________ system call creates new process in Unix.

Concept:

• In Unix like operating system, the fork system call is used for creating a new process where a process is a copy of itself, which is called the child process.
• The fork system call is usually a system call, implemented in the kernel.
• After a new child process is created, both processes will execute the next instruction following the fork() system call.
• If n times fork then total number of process create is 2ⁿ in which number of child processes created is 2ⁿ – 1

Example:

If 5 times fork system call is called then,

Total number of processes = 2⁵ = 32

Total number of child processes created = 2⁵ - 1 = 31