Reference

ntptime(8)

read kernel time variables

NAME

ntptime – read kernel time variables

SYNOPSIS

ntptime [-chr] [-e est_error] [-f frequency] [-m max_error] [-o offset] [-s status] [-t time_constant]

DESCRIPTION

The ntptime utility is useful only with special kernels described in the" A Kernel Model for Precision Timekeeping" page (available as part of the HTML documentation provided in /usr/share/doc/ntp). It reads and displays time-related kernel variables using the gettime() and adjtime(2) system calls if available. A similar display can be obtained using the ntpdc(8) program's kerninfo command.

The following options are available:

-c

Display the execution time of ntptime itself.

-e est_error

Specify estimated error, in microseconds.

-f frequency

Specify frequency offset, in parts per million.

-h

Display help information.

-m max_error

Specify max possible errors, in microseconds.

-o offset

Specify clock offset, in microseconds.

-r

Display Unix and NTP times in raw format.

-s status
-t time_constant

Specify time constant, an integer in the range 0-4.

SEE ALSO

adjtime(2), ntpdc(8)

History

-l until FreeBSD 10.1-RELEASE.