如何在终端中监控文件并打印出更改(使用inotify)？

#include <sys/inotify.h>

int fd = inotify_init();
if (fd == -1) {
    perror("inotify_init");
    exit(EXIT_FAILURE);
}

int wd = inotify_add_watch(fd, "/path/to/file", IN_MODIFY);
if (wd == -1) {
    perror("inotify_add_watch");
    exit(EXIT_FAILURE);
}

char buf[4096] __attribute__ ((aligned(__alignof__(struct inotify_event))));
ssize_t len = read(fd, buf, sizeof(buf));
if (len == -1) {
    perror("read");
    exit(EXIT_FAILURE);
}

struct inotify_event *event;
for (char *ptr = buf; ptr < buf + len; ptr += sizeof(struct inotify_event) + event->len) {
    event = (struct inotify_event *)ptr;
    if (event->mask & IN_MODIFY) {
        printf("File modified: %s\n", event->name);
    }
}