#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <assert.h> int main(int argc, char **argv){	assert(argc >= 3);	// yeah, really user-friendly... 	int reps = atoi(argv[1]);	assert(reps >= 1); 	for (int i = 0; i < reps; i++) {		pid_t pid = vfork();		if (pid == 0) {	// in the child			execv(argv[2], &argv[2]);			perror("exec");			abort();		}		if (pid < 0) {			perror("vfork");			abort();		}		waitpid(pid, NULL, 0);	}	return 0;}