### `ntptime` - read kernel time variables

#### Synopsis

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

#### Description

This program is useful only with special kernels described in the A Kernel Model for Precision Timekeeping page. It reads and displays time-related kernel variables using the `ntp_gettime()` system call. A similar display can be obtained using the `xntpdc` program and `kerninfo` command.

#### Options

`-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 times in Unix timeval format. Default is NTP format.

`-l`
  Specify the leap bits as a code from 0 to 3.

`-m max_error`
  Display help information.

`-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 0-4.