$FreeBSD: releng/10.1/usr.sbin/ntp/doc/ntptime.8 290000 2015-10-26 11:37:31Z glebius $

.Dd April 27, 2015 .Dt NTPTIME 8 .Os .Sh NAME .Nm ntptime .Nd read kernel time variables .Sh SYNOPSIS .Nm .Op Fl chr .Op Fl e Ar est_error .Op Fl f Ar frequency .Op Fl m Ar max_error .Op Fl o Ar offset .Op Fl s Ar status .Op Fl t Ar time_constant .Sh DESCRIPTION The .Nm utility is useful only with special kernels described in the .Qo A Kernel Model for Precision Timekeeping .Qc page (available as part of the HTML documentation provided in

a /usr/share/doc/ntp ) . It reads and displays time-related kernel variables using the .Fn gettime and .Xr adjtime 2 system calls if available. A similar display can be obtained using the .Xr ntpdc 8 program's c kerninfo command.

p The following options are available: l -tag -width indent t Fl c Display the execution time of .Nm itself. t Fl e Ar est_error Specify estimated error, in microseconds. t Fl f Ar frequency Specify frequency offset, in parts per million. t Fl h Display help information. t Fl m Ar max_error Specify max possible errors, in microseconds. t Fl o Ar offset Specify clock offset, in microseconds. t Fl r Display Unix and NTP times in raw format. t Fl s Ar status t Fl t Ar time_constant Specify time constant, an integer in the range 0-4. .El .Sh SEE ALSO .Xr adjtime 2 , .Xr ntpdc 8