The operation described is characteristic of the fork() system call in Linux, which is used to create a new process. The fork() system call generates a new process by duplicating the calling (parent) process. If the fork() is successful, the PID of the child process is returned to the parent process, and a 0 value is returned to the child process. If unsuccessful, a negative value is returned2.

References :=

How to create a process in Linux? - Online Tutorials Library