ntpdate
该选项是否-t
以整秒或分数形式设置超时?手册页并不完全清楚。它说
-t timeout
Specify the maximum time waiting for a server response as the
value timeout, in seconds and fraction. The value is rounded to
a multiple of 0.2 seconds. The default is 1 second, a value
suitable for polling across a LAN.
将为-t 3
三秒或 0.6 秒。