# calc_tickadj(1) - man - phpMan

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## 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 some‐
     where around 0.0.

     **calc**___**tickadj** tries to determine the the tick value by using **tickadj** program from ntp package.
     If this doesn't work you can specify current tick manually on command line.

## OPTIONS
### -d --drift-file
             Ntp drift file to use.  The default _string_ for this option is:
                  /etc/ntp/drift

             Use the specified drift file for calculations

### -t --tick
             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 --version
             Output version of program and exit.  The default mode is `v', a simple version.  The
             `c' mode will print copyright information 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 auto‐
             <gen-users@lists.sourceforge.net>.  Thank you.

## NOTES
     This manual page was _AutoGen_-erated from the **calc**___**tickadj** option definitions.

BSD                              June 23 2020                              BSD