NTPQ(1) 							Programmer's Manual							   NTPQ(1)

NAME

       ntpq - standard NTP query program

SYNOPSIS

       ntpq [-flag [value]]... [--opt-name [[=| ]value]]...
	       [ host ...]

DESCRIPTION

       This  manual page briefly documents the ntpq command.  The [= prog-name =] utility program is used to query NTP servers which implement the
       standard NTP mode 6 control message formats defined in Appendix B of the NTPv3 specification RFC1305, requesting information about  current
       state  and/or  changes  in that state.  The same formats are used in NTPv4, although some of the variables have changed and new ones added.
       The description on this page is for the NTPv4 variables.  The program may be run either in interactive mode  or	controlled  using  command
       line  arguments.   Requests to read and write arbitrary variables can be assembled, with raw and pretty-printed output options being avail-
       able.  The [= prog-name =] utility can also obtain and print a list of peers in a common format by sending multiple queries to the server.

       If one or more request options is included on the command line when [= prog-name =] is executed, each of the requests will be sent  to  the
       NTP  servers running on each of the hosts given as command line arguments, or on localhost by default.  If no request options are given, [=
       prog-name =] will attempt to read commands from the standard input and execute these on the NTP server running on the first host  given	on
       the  command  line, again defaulting to localhost when no other host is specified.  The [= prog-name =] utility will prompt for commands if
       the standard input is a terminal device.

       The [= prog-name =] utility uses NTP mode 6 packets to communicate with the NTP server, and hence can  be  used	to  query  any	compatible
       server  on  the network which permits it.  Note that since NTP is a UDP protocol this communication will be somewhat unreliable, especially
       over large distances in terms of network topology.  The [= prog-name =] utility makes one attempt to retransmit	requests,  and	will  time
       requests out if the remote host is not heard from within a suitable timeout time.

       Specifying  a  command  line option other than or will cause the specified query (queries) to be sent to the indicated host(s) immediately.
       Otherwise, [= prog-name =] will attempt to read interactive format commands from the standard input.  Interactive format  commands  consist
       of  a  keyword  followed  by  zero  to four arguments.  Only enough characters of the full keyword to uniquely identify the command need be
       typed.

       A number of interactive format commands are executed entirely within the [= prog-name =] utility itself and do not result  in  NTP  mode  6
       requests being sent to a server.  These are described following.

       ? [command_keyword]

       A  by  itself will print a list of all the command keywords known to this incarnation of [= prog-name =] .  A followed by a command keyword
       will print function and usage information about the command.  This command is probably a better source of information about [= prog-name =]
       than this manual page.

       addvars

       rmvars variable_name ...

       clearvars  The  data  carried  by  NTP mode 6 messages consists of a list of items of the form where the is ignored, and can be omitted, in
       requests to the server to read variables.  The [= prog-name =] utility maintains an internal list in which data to be included  in  control
       messages  can  be assembled, and sent using the and commands described below.  The command allows variables and their optional values to be
       added to the list.  If more than one variable is to be added, the list should be comma-separated and not contain white space.  The  command
       can be used to remove individual variables from the list, while the command removes all variables from the list.

       authenticate  [	yes  | no ] Normally [= prog-name =] does not authenticate requests unless they are write requests.  The command causes [=
       prog-name =] to send authentication with all requests it makes.	Authenticated requests causes some servers  to	handle	requests  slightly
       differently,  and  can  occasionally melt the CPU in fuzzballs if you turn authentication on before doing a display.  The command causes [=
       prog-name =] to display whether or not [= prog-name =] is currently autheinticating requests.

       cooked Causes output from query commands to be "cooked", so that variables which are recognized by [= prog-name =] will have  their  values
       reformatted  for  human	consumption.   Variables  which  [= prog-name =] thinks should have a decodable value but didn't are marked with a
       trailing ] With no argument, displays the current debug level.  Otherwise, the debug level is changed to the indicated level.

       delay milliseconds Specify a time interval to be added to timestamps included in requests which require authentication.	This  is  used	to
       enable (unreliable) server reconfiguration over long delay network paths or between machines whose clocks are unsynchronized.  Actually the
       server does not now require timestamps in authenticated requests, so this command may be obsolete.

       host hostname Set the host to which future queries will be sent.  Hostname may be either a host name or a numeric address.

       hostnames Cm yes | Cm no If is specified, host names are printed in information displays.  If is specified, numeric addresses  are  printed
       instead.  The default is unless modified using the command line switch.

       keyid  keyid This command allows the specification of a key number to be used to authenticate configuration requests.  This must correspond
       to a key number the server has been configured to use for this purpose.

       ntpversion [ ] Sets the NTP version number which [= prog-name =] claims in packets.  Defaults to 3, Note that mode 6 control messages  (and
       modes,  for that matter) didn't exist in NTP version 1.	There appear to be no servers left which demand version 1.  With no argument, dis-
       plays the current NTP version that will be used when communicating with servers.

       quit Exit [= prog-name =] .

       passwd This command prompts you to type in a password (which will not be echoed) which will be used to authenticate configuration requests.
       The password must correspond to the key configured for use by the NTP server for this purpose if such requests are to be successful.

       raw  Causes  all  output  from query commands is printed as received from the remote server.  The only formating/interpretation done on the
       data is to transform nonascii data into a printable (but barely understandable) form.

       timeout Ar milliseconds Specify a timeout period for responses to server queries.  The default is about 5000 milliseconds.  Note that since
       [= prog-name =] retries each query once after a timeout, the total waiting time for a timeout will be twice the timeout value set.

OPTIONS

       -4, --ipv4
	      Force IPv4 DNS name resolution.  This option must not appear in combination with any of the following options: ipv6.

	      Force DNS resolution of following host names on the command line to the IPv4 namespace.

       -6, --ipv6
	      Force IPv6 DNS name resolution.  This option must not appear in combination with any of the following options: ipv4.

	      Force DNS resolution of following host names on the command line to the IPv6 namespace.

       -c cmd, --command=cmd
	      run a command and exit.  This option may appear an unlimited number of times.

	      The  following  argument	is interpreted as an interactive format command and is added to the list of commands to be executed on the
	      specified host(s).

       -d, --debug-level
	      Increase output debug message level.  This option may appear an unlimited number of times.

	      Increase the debugging message output level.

       -D string, --set-debug-level=string
	      Set the output debug message level.  This option may appear an unlimited number of times.

	      Set the output debugging level.  Can be supplied multiple times, but each overrides the previous value(s).

       -p, --peers
	      Print a list of the peers.  This option must not appear in combination with any of the following options: interactive.

	      Print a list of the peers known to the server as well as a summary of their state. This is equivalent  to  the  'peers'  interactive
	      command.

       -i, --interactive
	      Force  ntpq  to operate in interactive mode.  This option must not appear in combination with any of the following options: command,
	      peers.

	      Force ntpq to operate in interactive mode.  Prompts will be written to the standard output  and  commands  read  from  the  standard
	      input.

       -n, --numeric
	      numeric host addresses.

	      Output all host addresses in dotted-quad numeric format rather than converting to the canonical host names.

       --old-rv
	      Always output status line with readvar.

	      By  default,  ntpq  now suppresses the associd=... line that precedes the output of "readvar" (alias "rv") when a single variable is
	      requested, such as ntpq -c "rv 0 offset".  This option causes ntpq to include both lines of output for  a  single-variable  readvar.
	      Using  an environment variable to preset this option in a script will enable both older and newer ntpq to behave identically in this
	      regard.

       -?, --help
	      Display extended usage information and exit.

       -!, --more-help
	      Extended usage information passed thru pager.

       -> [rcfile], --save-opts[=rcfile]
	      Save the option state to rcfile.	The default is the last configuration file listed in the OPTION PRESETS section, below.

       -< rcfile, --load-opts=rcfile, --no-load-opts
	      Load options from rcfile.  The no-load-opts form will disable the loading of earlier RC/INI files.  --no-load-opts is handled early,
	      out of order.

       - [{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.

OPTION PRESETS

       Any option that is not marked as not presettable may be preset by loading values from configuration ("RC" or  ".INI")  file(s)  and  values
       from environment variables named:
	 NTPQ_<option-name> or NTPQ
       The  environmental  presets take precedence (are processed later than) the configuration files.	The homerc files are "$HOME", and ".".	If
       any of these are directories, then the file .ntprc is searched for within those directories.

AUTHOR

       David L. Mills and/or others
       Please send bug reports to:  http://bugs.ntp.org, bugs@ntp.org

       see html/copyright.html

       This manual page was AutoGen-erated from the ntpq option definitions.

( 4.2.6)							    2009-12-10								   NTPQ(1)