.\" .\" $FreeBSD: src/usr.sbin/ntp/doc/ntptime.8,v 1.4 2002/07/14 14:44:40 charnier Exp $ .\" .Dd January 7, 2000 .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 .Pa /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 .Ic kerninfo command. .Pp The following options are available: .Bl -tag -width indent .It Fl c Display the execution time of .Nm itself. .It Fl e Ar est_error Specify estimated error, in microseconds. .It Fl f Ar frequency Specify frequency offset, in parts per million. .It Fl h Display help information. .It Fl l Specify the leap bits as a code from 0 to 3. .It Fl m Ar max_error Specify max possible errors, in microseconds. .It Fl o Ar offset Specify clock offset, in microseconds. .It Fl r Display Unix and NTP times in raw format. .It Fl s Ar status .It 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