ttyprintf        1717 process.c          ttyprintf("dup(%d) => %d\n", oldfd, ret);
ttyprintf        1726 process.c          ttyprintf("dup2(%d, %d)\n", oldfd, newfd);
ttyprintf        1735 process.c          ttyprintf("close(%d)\n", fd);
ttyprintf        1744 process.c          ttyprintf("open(\"%s\", 0x%x, 0%o) => %d\n", pathname, flags, perm, ret);