Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   20652 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

ntptrace(1M)		System Administration Commands		  ntptrace(1M)

NAME
       ntptrace - trace a chain of NTP hosts back to their master time source

SYNOPSIS
       /usr/sbin/ntptrace [-vdn] [-r retries] [-t timeout] [server]

DESCRIPTION
       ntptrace	 determines  where  a given Network Time Protocol (NTP) server
       gets its time from, and follows the chain of  NTP servers back to their
       master time source. If given no arguments, it starts with  localhost.

OPTIONS
       The following options are supported:

       -d	       Turns on some debugging output.

       -n	       Turns  off the printing of host names; instead, host IP
		       addresses are given.  This may be necessary if a	 name‐
		       server is down.

       -r retries      Sets  the  number  of  retransmission attempts for each
		       host.

       -t timeout      Sets the retransmission timeout (in seconds); default =
		       2.

       -v	       Prints verbose information about the  NTP servers.

EXAMPLES
       Example 1: Sample Output From the ntptrace Command

       The following example shows the output from the ntptrace command:

       % ntptrace
	 localhost: stratum 4, offset 0.0019529, synch distance 0.144135
	 server2.bozo.com: stratum 2, offset 0.0124263, synch distance 0.115784
	 usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB'

       On each line, the fields are (left to right):

	 ·  The server's host name

	 ·  The server's stratum

	 ·  The	 time  offset  between that server and the local host (as mea‐
	    sured by ntptrace; this is why it is not always zero  for	local‐
	    host)

	 ·  The host's synchronization distance

	 ·  The reference clock ID (only for stratum-1 servers)

       All  times  are given in seconds. Synchronization distance is a measure
       of the goodness of the clock's time.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Availability		     │SUNWntpu			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       xntpd(1M), attributes(5)

BUGS
       This program makes no attempt to improve	 accuracy  by  doing  multiple
       samples.

SunOS 5.10			  19 Mar 1998			  ntptrace(1M)

Vote for polarhome