1.\" 2.Dd April 27, 2015 3.Dt NTPTIME 8 4.Os 5.Sh NAME 6.Nm ntptime 7.Nd read kernel time variables 8.Sh SYNOPSIS 9.Nm 10.Op Fl chr 11.Op Fl e Ar est_error 12.Op Fl f Ar frequency 13.Op Fl m Ar max_error 14.Op Fl o Ar offset 15.Op Fl s Ar status 16.Op Fl t Ar time_constant 17.Sh DESCRIPTION 18The 19.Nm 20utility is useful only with special kernels 21described in the 22.Qo 23A Kernel Model for Precision Timekeeping 24.Qc 25page 26(available as part of the HTML documentation 27provided in 28.Pa /usr/share/doc/ntp ) . 29It reads and displays time-related kernel variables 30using the 31.Fn gettime 32and 33.Xr adjtime 2 34system calls if available. 35A similar display can be obtained using the 36.Xr ntpdc 8 37program's 38.Ic kerninfo 39command. 40.Pp 41The following options are available: 42.Bl -tag -width indent 43.It Fl c 44Display the execution time of 45.Nm 46itself. 47.It Fl e Ar est_error 48Specify estimated error, in microseconds. 49.It Fl f Ar frequency 50Specify frequency offset, in parts per million. 51.It Fl h 52Display help information. 53.It Fl m Ar max_error 54Specify max possible errors, in microseconds. 55.It Fl o Ar offset 56Specify clock offset, in microseconds. 57.It Fl r 58Display Unix and NTP times in raw format. 59.It Fl s Ar status 60.It Fl t Ar time_constant 61Specify time constant, an integer in the range 0-4. 62.El 63.Sh SEE ALSO 64.Xr adjtime 2 , 65.Xr ntpdc 8 66