THIS PROGRAMS ONLY EXECUTE ON LINUX OPERATING SYSTEM. Set A: 1) Implement the C Program to create a child process using fork(), display parent and child process id. Child process will display the message “I am Child Process” and the parent process should display “I am Parent Process”. CODE: 👇 #include<stdio.h> #include<stdlib.h> #include<unistd.h> void main() { int pid; pid=fork(); if(pid ==0) { printf("\n I am child process") printf("\n My parent process id is : %d",getppid()); } else if(pid > 0) { printf("\n I am parent process"); printf("my pid is :%d",getpid()); } else if(pid < 0) { printf("\n Unable to create a process..!"); exit(0); } } 2) Write a program that demonstrates the use of nice() system call. After a child process is started using fork(), assign higher priority to the child using n...