Learning more about process creation

A common practice in system programming is to follow a strict timeline for process creation and execution. Programmers use either daemons, such as systemd and other in-house developed solutions, or startup scripts. We can use the Terminal as well but this is mostly for when we repair the system’s state and restore it, or test a given functionality. Another way to initiate processes from our code is through system calls. You probably know some of them, such as fork() and vfork().

Introducing fork()

Let’s look at an example; we’ll discuss it afterward:

#include <iostream>
#include <unistd.h>
using namespace std;
void process_creator() {
    if (fork() == 0) // {1}
        cout << "Child with pid: " << getpid() << endl;
    else
        cout << "Parent...