pid_t   pid, runner;
char *path = argv[1];
char enter[] = "/home/demo/Desktop/OS/Ex1/Ex12/code/input.txt";
char to[] = "/home/demo/Desktop/OS/Ex1/Ex12/Ex1/ronen/";
char *out = "/home/demo/Desktop/OS/Ex1/Ex12/Ex1/ronen/out1.txt";
char *args[] = {to, "./a.out","<",enter,">",out, NULL};
char *args2[] = {"cd", to, "./a.out","<",enter,">",to ,NULL};
if ((runner = fork()) < 0) {perror("could not make fork");}
else if (runner == 0) {
    printf("truen");
    execvp(args2[0],args2);
} else if (runner != 0) {
    waitpid(runner,0,0);
    printf("donen");
}