NAME
ntpq - standard NTP query program
SYNOPSIS
ntpq [-inp] [-c command] [host] [...]
DESCRIPTION
The ntpq utility program is used to monitor NTP daemon ntpd operations and determine performance. It uses the standard NTP mode 6 control message formats defined in Appendix B of the NTPv3 specification RFC1305. 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 can 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 available. The ntpq 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 ntpq 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, ntpq 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. ntpq will prompt for commands if the standard input is a terminal device. ntpq 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. ntpq makes one attempt to retransmit requests, and will time requests out if the remote host is not heard from within a suitable timeout time. Note that in contexts where a host name is expected, a -4 qualifier preceding the host name forces DNS resolution to the IPv4 namespace, while a -6 qualifier forces DNS resolution to the IPv6 namespace.
OPTIONS
Command line options are described following. Specifying a command line option other than -i or -n will cause the specified query (queries) to be sent to the indicated host(s) immediately. Otherwise, ntpq will attempt to read interactive format commands from the standard input. -4 Force DNS resolution of following host names on the command line to the IPv4 namespace. -6 Force DNS resolution of following host names on the command line to the IPv6 namespace. -c 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). Multiple -c options may be given. -i Force ntpq to operate in interactive mode. Prompts will be written to the standard output and commands read from the standard input. -n Output all host addresses in dotted-quad numeric format rather than converting to the canonical host names. -p 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.
SEE ALSO
/usr/share/doc/ntp-doc/html/ntpq.html for the full documentation.
More Linux Commands
manpages/cyclone.1.html
cyclone(1) - tornado screen saver. - Linux manual page......
From Terry Walsh (http://reallyslick.com): This screen saver makes tornadoes on your screen. I wrote it for my storm chasing partner, but you can have it too. P
manpages/isdninfo.4.html
isdninfo.4 (Manual - Linux man page).......................
/dev/isdninfo is a character device with major number 45 and minor number 255. It delivers status information from the Linux ISDN subsystem to user level. DATA
manpages/sane-kvs20xx.5.html
sane-kvs20xx(5) - SANE backend for Panasonic KV-S20xxC USB/S
The sane-kvs20xx library implements a SANE (Scanner Access Now Easy) backend which provides access to the Panasonic KV-S202xC and KV-S204xC scanners. KNOWN ISSU
manpages/fsck.8.html
fsck(8) - check and repair a Linux filesystem (Man Page)....
fsck is used to check and optionally repair one or more Linux filesystems. filesys can be a device name (e.g. /dev/hdc1, /dev/sdb2), a mount point (e.g. /, /usr
manpages/Tcl_GetCharLength.3.html
Tcl_GetCharLength(3) - manipulate Tcl objects as strings....
The procedures described in this manual entry allow Tcl objects to be manipulated as string values. They use the internal representation of the object to store
manpages/c++filt.1.html
c++filt(1) - Demangle C++ and Java symbols. - Linux man page
The C ++ and Java languages provide function overloading, which means that you can write many functions with the same name, providing that each function takes p
manpages/get_auditfail_action.3.html
get_auditfail_action(3) - Get failure_action tunable value
This function gets the failure_action tunable value stored in /etc/libaudit.conf. get_auditfail_action should be called after an audit_open call returns an erro
manpages/scandirat.3.html
scandirat(3) scan a directory for matching entries..........
The scandir() function scans the directory dirp, calling filter() on each directory entry. Entries for which filter() returns nonzero are stored in strings allo
manpages/XtDisplayStringConversionWarning.3.html
XtDisplayStringConversionWarning(3) - issue a conversion war
The XtDisplayStringConversionWarning function issues a warning message using XtAppWarningMsg with name conversionError, type string, class XtToolkitError, and t
manpages/timer_getoverrun.2.html
timer_getoverrun(2) - get overrun count for a POSIX per-proc
timer_getoverrun() returns the overrun count for the timer referred to by timerid. An application can use the overrun count to accurately calculate the number o
manpages/gpg-zip.1.html
gpg-zip(1) - Encrypt or sign files into an archive (ManPage)
gpg-zip encrypts or signs files into an archive. It is an gpg-ized tar using the same format as used by PGPs PGP Zip. OPTIONS gpg-zip understands these options:
manpages/XCheckMaskEvent.3.html
XCheckMaskEvent(3) - select events by type - Linux man page
XCheckMaskEvent.3 - The XNextEvent function copies the first event from the event queue into the specified XEvent structure and then removes it from the queue.
