Man page 8 : ntptime

ntptime - read kernel time variables

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

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 ntpdc program and kerninfo command.

• -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.