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ntp-wait(1) [opendarwin man page]

ntp-wait(1)							   User Commands						       ntp-wait(1)

ntp-wait - Wait for ntpd to stabilize the system clock SYNOPSIS
ntp-wait [-flags] [-flag [value]] [--option-name[[=| ]value]] All arguments must be options. DESCRIPTION
ntp-wait will send at most num-tries queries to ntpd(8), sleeping for secs-between-tries after each status return that says ntpd(8) has not yet produced a synchronized and stable system clock. ntp-wait will do this quietly, unless the -v flag is provided. This can be useful at boot time, to delay the boot sequence until after ntpd -g has set the time. OPTIONS
-n number, --tries=number Number of times to check ntpd. This option takes an integer number as its argument. The default number for this option is: 100 The maximum number of times we will check ntpd to see if it has been able to synchronize and stabilize the system clock. -s secs-between-tries, --sleep=secs-between-tries How long to sleep between tries. This option takes an integer number as its argument. The default secs-between-tries for this option is: 6 We will sleep for secs-between-tries after each query of ntpd that returns "the time is not yet stable". -v, --verbose Be verbose. By default, ntp-wait is silent. With this option, ntp-wait will provide status information. -?, --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 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 Thank you. AUTHORS
Harlan Stenn NOTES
This document corresponds to version 4.2.8p13 of NTP. This manual page was AutoGen-erated from the ntp-wait option definitions. ntp (4.2.8p13) 20 Feb 2019 ntp-wait(1)

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ntp.keys(5)							   File Formats 						       ntp.keys(5)

ntp.keys - NTP symmetric key file format configuration file SYNOPSIS
[--option-name] [--option-name value] All arguments must be options. DESCRIPTION
This document describes the format of an NTP symmetric key file. For a description of the use of this type of file, see the "Authentica- tion Support" section of the ntp.conf(5) page. ntpd(8) reads its keys from a file specified using the -k command line option or the keys statement in the configuration file. While key number 0 is fixed by the NTP standard (as 56 zero bits) and may not be changed, one or more keys numbered between 1 and 65535 may be arbi- trarily set in the keys file. The key file uses the same comment conventions as the configuration file. Key entries use a fixed format of the form keyno type key opt_IP_list where keyno is a positive integer (between 1 and 65535), type is the message digest algorithm, key is the key itself, and opt_IP_list is an optional comma-separated list of IPs where the keyno should be trusted. that are allowed to serve time. Each IP in opt_IP_list may con- tain an optional /subnetbits specification which identifies the number of bits for the desired subnet of trust. If opt_IP_list is empty, any properly-authenticated message will be accepted. The key may be given in a format controlled by the type field. The type MD5 is always supported. If ntpd was built with the OpenSSL library then any digest library supported by that library may be specified. However, if compliance with FIPS 140-2 is required the type must be either SHA or SHA1. What follows are some key types, and corresponding formats: MD5 The key is 1 to 16 printable characters terminated by an EOL, whitespace, or a # (which is the "start of comment" character). SHA SHA1 RMD160 The key is a hex-encoded ASCII string of 40 characters, which is truncated as necessary. Note that the keys used by the ntpq(8) and ntpdc(8) programs are checked against passwords requested by the programs and entered by hand, so it is generally appropriate to specify these keys in ASCII format. FILES
/etc/ntp.keys the default name of the configuration file SEE ALSO
ntp.conf(5), ntpd(1), ntpdate(1), ntpdc(1), sntp(1) AUTHORS
The University of Delaware and Network Time Foundation COPYRIGHT
Copyright (C) 1992-2017 The University of Delaware and Network Time Foundation all rights reserved. This program is released under the terms of the NTP license, <>. BUGS
Please send bug reports to:, NOTES
This document was derived from FreeBSD. This manual page was AutoGen-erated from the ntp.keys option definitions. 4.2.8p13 20 Feb 2019 ntp.keys(5)
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