11 if ((pid
= fork()) == -1) {
14 } else if (pid
== 0) {
15 execlp("who", "who", NULL
);
20 // without it just exec with the &
21 // with it exec with the ;
24 if ((pid
= fork()) == -1) {
27 } else if (pid
== 0) {
28 execlp("ps", "ps", NULL
);
35 execlp("ls", "ls", "-l", NULL
);