-n number] [
ntpwait program blocks until ntpd is in synchronized state. This can be useful at boot time, to delay the boot sequence until after "ntpd -g" has set the time.
ntpwait will send at most number queries to ntpd(8), sleeping for secs seconds after each status return that says ntpd(8) has not yet produced a synchronized and stable system clock.
ntpwait will do this quietly, unless the
-v flag is provided.
- -n number, --tries=number
Number of times to check ntpd. This option takes an integer number as its argument. The default number for this option is: 100.
The maximum number of times we will check ntpd to see if it has been able to synchronize and stabilize the system clock.
- -s secs-between-tries, --sleep=secs-between-tries
How long to sleep between tries. This option takes an integer number as its argument. The default secs-between-tries for this option is: 6.
We will sleep for secs-between-tries after each query of ntpd that returns "the time is not yet stable".
- -v, --verbose
ntpwaitis silent. With this option,
ntpwaitwill provide status information, including time to synchronization in seconds.
- -V, --version
Print the version string and exit.
If you are running Python at a version older than 3.3, the report on time to synchronization may be thrown off by NTP clock stepping.
One of the following exit values will be returned:
Successful program execution.
The operation failed or the command syntax was not valid.
Operation was interrupted by signal.