.Dd March 21 2017 .Dt NTPTRACE @NTPTRACE_MS@ User Commands .Os .\" EDIT THIS FILE WITH CAUTION (ntptrace-opts.mdoc) .\" .\" It has been AutoGen-ed March 21, 2017 at 10:40:25 AM by AutoGen 5.18.5 .\" From the definitions ntptrace-opts.def .\" and the template file agmdoc-cmd.tpl .Sh NAME .Nm ntptrace .Nd Trace peers of an NTP server .Sh SYNOPSIS .Nm .\" Mixture of short (flag) options and long options .Op Fl flags .Op Fl flag Op Ar value .Op Fl \-option\-name Ns Oo Oo Ns "=| " Oc Ns Ar value Oc [host] .Pp .Sh DESCRIPTION \fBntptrace\fP is a perl script that uses the ntpq utility program to follow the chain of NTP servers from a given host back to the primary time source. For ntptrace to work properly, each of these servers must implement the NTP Control and Monitoring Protocol specified in RFC 1305 and enable NTP Mode 6 packets. .sp If given no arguments, ntptrace starts with localhost. Here is an example of the output from ntptrace: .sp .Bd -literal -offset indent % ntptrace localhost: stratum 4, offset 0.0019529, synch distance 0.144135 server2ozo.com: stratum 2, offset 0.0124263, synch distance 0.115784 usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB' .Ed .sp On each line, the fields are (left to right): the host name, the host stratum, the time offset between that host and the local host (as measured by \fBntptrace\fP; this is why it is not always zero for "localhost"), the host synchronization distance, and (only for stratum\-1 servers) the reference clock ID. All times are given in seconds. Note that the stratum is the server hop count to the primary source, while the synchronization distance is the estimated error relative to the primary source. These terms are precisely defined in RFC\-1305. .Sh "OPTIONS" .Bl -tag .It Fl n , Fl \-numeric Print IP addresses instead of hostnames. .sp Output hosts as dotted\-quad numeric format rather than converting to the canonical host names. .It Fl m Ar number , Fl \-max\-hosts Ns = Ns Ar number Maximum number of peers to trace. This option takes an integer number as its argument. The default .Ar number for this option is: .ti +4 99 .sp This option has not been fully documented. .It Fl r Ar string , Fl \-host Ns = Ns Ar string Single remote host. The default .Ar string for this option is: .ti +4 127.0.0.1 .sp This option has not been fully documented. .It Fl \&? , Fl \-help Display usage information and exit. .It Fl \&! , Fl \-more\-help Pass the extended usage information through a pager. .It Fl v Op Brq Ar v|c|n Fl \-version Op Brq Ar 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. .El .Sh "EXIT STATUS" One of the following exit values will be returned: .Bl -tag .It 0 " (EXIT_SUCCESS)" Successful program execution. .It 1 " (EXIT_FAILURE)" The operation failed or the command syntax was not valid. .It 70 " (EX_SOFTWARE)" libopts had an internal operational error. Please report it to autogen\-users@lists.sourceforge.net. Thank you. .El .Sh "NOTES" This manual page was \fIAutoGen\fP\-erated from the \fBntptrace\fP option definitions.