ntptime8
Read kernel time variables
Usage
ntptime [-chr]
[-e
est_error]
[-f
frequency]
[-m
max_error]
[-o
offset]
[-s
status]
[-t
time_constant]
Overview
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
ntptimeitself. -
-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.
Releases
70 releases since FreeBSD 4.0-RELEASE; the text changed 37 times.
- 4.0–4.2
- 4.3
- 4.4
- 4.5–4.7
- 4.8–4.11
- 5.0–6.3
- 6.4
- 7.0
- 7.1
- 7.2
- 7.3
- 7.4
- 8.0
- 8.1
- 8.2
- 8.3
- 8.4
- 9.0
- 9.1
- 9.2
- 9.3
- 10.0
- 10.1
- 10.2
- 10.3
- 10.4
- 11.0
- 11.1
- 11.2
- 11.3
- 11.4
- 12.0
- 12.1
- 12.2
- 12.3
- 12.4
- 13.0–13.2
- 13.3–16.0
-l until FreeBSD 10.1-RELEASE.