| NTPTIME(8) | NTPsec | NTPTIME(8) |
ntptime - read and set kernel time variables
ntptime [-chr] [-e est_error] [-f frequency] [-j]
[-m max_error] [-o offset] [-s status]
[-t time_constant]
Checks the kernel configuration for the NTP user interface syscalls ntp_gettime() and ntp_adjtime(). If present, the current timekeeping data are displayed. If not, a disappointment is displayed. See the kernel page file in the HTML documentation in distribution for further details.
A similar display can be obtained using the ntpq program and kerninfo command.
This program is useful only with kernels featuring the ntp_adjtime(2) system call or local equivalent, as described in the A Kernel Model for Precision Timekeeping[1] page,
-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.
-j
Report in JSON rather than plain text.
-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
Specify clock status. Better know what you are doing.
-t time_constant
Specify time constant, an integer in the range 0-10.
-V
Print the version string and exit.
The format for modes and status in the JSON report is less than ideal.
One of the following exit values will be returned:
0 (EXIT_SUCCESS)
Successful program execution.
1 (EXIT_FAILURE)
The operation failed or the command invocation was not valid.
| 03/12/2024 | NTPsec 1.2.3 |