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- experimental 1:4.2.8p13+dfsg-1
calc_tickadj(1calc_tickadjman) | User Commands | calc_tickadj(1calc_tickadjman) |
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 program 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/driftUse 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
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Display usage information and exit. - -!, --more-help
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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 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)
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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 definitions.21 Mar 2017 | ntp (4.2.8p10) |