# ntptime(8) - man - phpman

[NTPTIME(8)](https://www.chedong.com/phpMan.php/man/NTPTIME/8/markdown)                             System Manager's Manual                            [NTPTIME(8)](https://www.chedong.com/phpMan.php/man/NTPTIME/8/markdown)



## 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
       This program is useful only with special kernels described in the A Kernel Model  for  Preci‐
       sion Timekeeping page. It reads and displays time-related kernel variables using the ntp_get‐
       time() system call. A similar display can be obtained using the ntpdc  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 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_
              Specify clock status. Better know what you are doing.

       -t _time_constant_
              Specify time constant, an integer in the range 0-10.



Network Time Protocol                      October 7, 2006                                [NTPTIME(8)](https://www.chedong.com/phpMan.php/man/NTPTIME/8/markdown)