Linux watchdog
使用 watchdog 构建高可用性的 Linux 系统及应用
https://www.ibm.com/developerworks/cn/linux/l-cn-watchdog/index.html
watchdog(8):软件看门狗守护进程 - Linux手册页
https://linux.die.net/man/8/watchdog
watchdog_百度百科
https://baike.baidu.com/item/Watchdog/5403686
linux watchdog看门狗编程 - 简书
https://www.jianshu.com/p/b0528ec1d01d
linux watchdog demo hacking - zengjf - 博客园
http://www.cnblogs.com/zengjfgit/p/5328356.html
watchdog首页、文档和下载 - Linux看门狗 - 开源中国
https://www.oschina.net/p/watchdog