1@node calc_tickadj Invocation 2@section Invoking calc_tickadj 3@pindex calc_tickadj 4@cindex Calculates "optimal" value for tick given ntp drift file. 5@ignore 6# 7# EDIT THIS FILE WITH CAUTION (invoke-calc_tickadj.texi) 8# 9# It has been AutoGen-ed June 29, 2015 at 04:26:27 PM by AutoGen 5.18.5 10# From the definitions calc_tickadj-opts.def 11# and the template file agtexi-cmd.tpl 12@end ignore 13 14The @code{calc_tickadj} script uses provided ntp drift file to generate optimal 15tick value. Generally, ntpd can do better job if the drift value is the 16smallest possible number. 17 18The example output of 19@example 20$ ./calc_tickadj 2181.699 (drift) 229999 usec; 9999779 nsec 23$ cat /etc/ntp/drift 24-23.159 25@end example 26 27means the following. If tick on that box is 10,000, by making the value 9999 28we'll shift the box from its current drift of -23.159 to a drift of 81.699, and 29in doing so we'll speed the clock up a little every second instead of slowing 30the clock down a little. 31 32If 'tick' on that box is 10,000,000 then by setting it to 9999779 the drift 33value will be somewhere around 0.0. 34 35@code{calc_tickadj} tries to determine the the tick value by using 36@code{tickadj} program from ntp package. If this doesn't work you can specify 37current tick manually on command line. 38 39 40This section was generated by @strong{AutoGen}, 41using the @code{agtexi-cmd} template and the option descriptions for the @code{calc_tickadj} program. 42 43@menu 44* calc_tickadj usage:: calc_tickadj help/usage (@option{--help}) 45* calc_tickadj drift-file:: drift-file option (-d) 46* calc_tickadj tick:: tick option (-t) 47* calc_tickadj exit status:: exit status 48@end menu 49 50@node calc_tickadj usage 51@subsection calc_tickadj help/usage (@option{--help}) 52@cindex calc_tickadj help 53 54This is the automatically generated usage text for calc_tickadj. 55 56The text printed is the same whether selected with the @code{help} option 57(@option{--help}) or the @code{more-help} option (@option{--more-help}). @code{more-help} will print 58the usage text by passing it through a pager program. 59@code{more-help} is disabled on platforms without a working 60@code{fork(2)} function. The @code{PAGER} environment variable is 61used to select the program, defaulting to @file{more}. Both will exit 62with a status code of 0. 63 64@exampleindent 0 65@example 66calc_tickadj - Calculates "optimal" value for tick given ntp drift file. - Ver. 4.2.7p467 67USAGE: calc_tickadj [ -<flag> [<val>] | --<name>[@{=| @}<val>] ]... 68 69 -d, --drift-file=str Ntp drift file to use 70 -t, --tick=num Tick value of this host 71 -?, --help Display usage information and exit 72 --more-help Pass the extended usage text through a pager 73 74Options are specified by doubled hyphens and their name or by a single 75hyphen and the flag character. 76@end example 77@exampleindent 4 78 79@node calc_tickadj drift-file 80@subsection drift-file option (-d) 81@cindex calc_tickadj-drift-file 82 83This is the ``ntp drift file to use'' option. 84This option takes a string argument. 85Use the specified drift file for calculations 86@node calc_tickadj tick 87@subsection tick option (-t) 88@cindex calc_tickadj-tick 89 90This is the ``tick value of this host'' option. 91This option takes a number argument. 92The current tick which to adjustment will be calculated 93@node calc_tickadj exit status 94@subsection calc_tickadj exit status 95 96One of the following exit values will be returned: 97@table @samp 98@item 0 (EXIT_SUCCESS) 99Successful program execution. 100@item 1 (EXIT_FAILURE) 101The operation failed or the command syntax was not valid. 102@end table 103