Examples

• filesystem monitoring. E.g. whered for laptops:

• kq = kqueue();

• if (kq == -1) {

• perror("whered: kqueue");

• exit(1);

• }

• for(;;) {

• ev.ident = fd;

• ev.filter = EVFILT_VNODE;

• ev.flags = EV_ADD | EV_ENABLE | EV_CLEAR;

• ev.fflags = NOTE_WRITE;

• if (kevent(kq, &ev, 1, &ev, 1, NULL) == -1) {

• perror("whered: kevent");

• exit(1);

• }

• system("/etc/my_pccard_ether");

• }

Notes: