hwclock --systohc
使用ntpdate更新系统时间 - 潜龙勿用 - CSDN博客
https://blog.csdn.net/suer0101/article/details/7868813
pool.ntp.org: the internet cluster of ntp servers
https://www.ntppool.org/zh/#top
hwclock --systohc
使用ntpdate更新系统时间 - 潜龙勿用 - CSDN博客
https://blog.csdn.net/suer0101/article/details/7868813
pool.ntp.org: the internet cluster of ntp servers
https://www.ntppool.org/zh/#top