calc_tickadj(1)



CALC_TICKADJ(1calc_tickadjmdoc)      User      CALC_TICKADJ(1calc_tickadjmdoc)

NAME
     calc_tickadj -- Calculates optimal value for tick given ntp drift file.

SYNOPSIS
     calc_tickadj [-flags] [-flag [value]] [--option-name[[=| ]value]]

                  All arguments must be options.

DESCRIPTION
     The calc_tickadj script uses provided ntp drift file to generate optimal
     tick value. Generally, ntpd can do better job if the drift value is the
     smallest possible number.

     The example output of

           $ ./calc_tickadj
           81.699 (drift)
           9999 usec; 9999779 nsec
           $ cat /etc/ntp/drift
           -23.159

     means the following. If tick on that box is 10,000, by making the value
     9999 we'll shift the box from its current drift of -23.159 to a drift of
     81.699, and in doing so we'll speed the clock up a little every second
     instead of slowing the clock down a little.

     If 'tick' on that box is 10,000,000 then by setting it to 9999779 the
     drift value will be somewhere around 0.0.

     calc_tickadj tries to determine the the tick value by using tickadj pro-
     gram from ntp package. If this doesn't work you can specify current tick
     manually on command line.

OPTIONS
     -d string, --drift-file=string
                 Ntp drift file to use.  The default string for this option
                 is:
                      /etc/ntp/drift

                 Use the specified drift file for calculations

     -t number, --tick=number
                 Tick value of this host.  This option takes an integer number
                 as its argument.

                 The current tick which to adjustment will be calculated

     -?, --help  Display usage information and exit.

     -!, --more-help
                 Pass the extended usage information through a pager.

     -v [{v|c|n --version [{v|c|n}]}]
                 Output version of program and exit.  The default mode is `v',
                 a simple version.  The `c' mode will print copyright informa-
                 tion and `n' will print the full copyright notice.

EXIT STATUS
     One of the following exit values will be returned:

     0  (EXIT_SUCCESS)
                   Successful program execution.

     1  (EXIT_FAILURE)
                   The operation failed or the command syntax was not valid.

     70  (EX_SOFTWARE)
                   libopts had an internal operational error.  Please report
                   it to autogen-users@lists.sourceforge.net.  Thank you.

NOTES
     This manual page was AutoGen-erated from the calc_tickadj option defini-
     tions.

BSD                              March 21 2017                             BSD

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