Kevent, python y FreeBSD

    #!/usr/bin/python26
    # kevent proc demo - luis peralta
    # https://www.ziritione.org
    #
    # tested on python 2.6 % freebsd 7.2
    
    import sys
    import select
    
    if __name__ == '__main__':
        print sys.argv
        kq = select.kqueue()
        ke = select.kevent(int(sys.argv[1]),
                           select.KQ_FILTER_PROC,
                           select.KQ_EV_ADD|select.KQ_EV_ADD,
                           select.KQ_NOTE_FORK|select.KQ_NOTE_EXEC|select.KQ_NOTE_TRACK, select.KQ_NOTE_EXIT)
        events = kq.control([ke], 0, 0)
        while True:
            events = kq.control([], 1, 0)
            if len(events) > 0:
                for event in events:
                    if event.fflags & select.KQ_NOTE_FORK:
                        print event.ident, "forked"
                    if event.fflags & select.KQ_NOTE_EXEC:
                        print event.ident, "called exec"
                    if event.fflags & select.KQ_NOTE_EXIT:
                        print event.ident, "exited"
                    if event.fflags & select.KQ_NOTE_CHILD:
                        print event.ident, "is child, parent ", event.data