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NTPSTAT(1)                  General Commands Manual                 NTPSTAT(1)

NAME
       ntpstat - Print NTP synchronisation status

SYNOPSIS
       ntpstat [-m MAXERROR]

DESCRIPTION
       ntpstat  is a script which prints a brief summary of the system clock's
       synchronisation status when the ntpd or chronyd daemon is running.   It
       prints  the  time  source  (NTP server or reference clock) to which the
       system clock is currently synchronised, its stratum, how often  is  the
       server polled, and the maximum estimated error of the clock. The script
       uses the ntpq or chronyc program to obtain  the  information  from  the
       daemon.
       Following  the  NTPv4  specification  (RFC  5905),  if  the time source
       becomes unreachable and there  are  no  other  sources  that  could  be
       selected, the status of the clock will still be "synchronised", but the
       maximum error will be slowly increasing.
       ntpstat exits with a status of 0 if the clock is synchronised, 1 if the
       clock  is  not  synchronised,  2 if the status could not be determined,
       e.g.  when the daemon is not running, or 3 if an  invalid  command-line
       option was specified.

OPTIONS
       -m MAXERROR
               Specify  a  maximum  acceptable error of the clock in millisec-
               onds. If the clock is synchronised, but its  maximum  estimated
               error is larger than MAXERROR, or is unknown, ntpstat will exit
               with a status of 1.
       -h      Print a help message.

SEE ALSO
       ntpd(8), ntpq(8), chronyd(8), chronyc(1)

ntpstat                                                             NTPSTAT(1)