Lines Matching +full:startup +full:- +full:time +full:- +full:ms
7 # EDIT THIS FILE WITH CAUTION (invoke-ntpd.texi)
9 # It has been AutoGen-ed May 25, 2024 at 12:04:00 AM by AutoGen 5.18.16
10 # From the definitions ntpd-opts.def
11 # and the template file agtexi-cmd.tpl
19 and maintains the system time of day in synchronism with Internet
20 standard time servers.
22 Network Time Protocol (NTP) version 4, as defined by RFC-5905,
24 version 3, as defined by RFC-1305, and versions 1
25 and 2, as defined by RFC-1059 and RFC-1119, respectively.
29 utility does most computations in 64-bit floating point
30 arithmetic and does relatively clumsy 64-bit fixed point operations
41 configuration file at startup time in order to determine the
49 listening to broadcasts at run time.
60 @code{-c}
86 using the @code{agtexi-cmd} template and the option descriptions for the @code{ntpd} program.
90 * ntpd usage:: ntpd help/usage (@option{--help})
91 * ntpd ipv4:: ipv4 option (-4)
92 * ntpd ipv6:: ipv6 option (-6)
93 * ntpd authreq:: authreq option (-a)
94 * ntpd authnoreq:: authnoreq option (-A)
95 * ntpd configfile:: configfile option (-c)
96 * ntpd driftfile:: driftfile option (-f)
97 * ntpd panicgate:: panicgate option (-g)
98 * ntpd force-step-once:: force-step-once option (-G)
99 * ntpd jaildir:: jaildir option (-i)
100 * ntpd interface:: interface option (-I)
101 * ntpd keyfile:: keyfile option (-k)
102 * ntpd logfile:: logfile option (-l)
103 * ntpd novirtualips:: novirtualips option (-L)
104 * ntpd modifymmtimer:: modifymmtimer option (-M)
105 * ntpd nice:: nice option (-N)
106 * ntpd pidfile:: pidfile option (-p)
107 * ntpd priority:: priority option (-P)
108 * ntpd quit:: quit option (-q)
109 * ntpd propagationdelay:: propagationdelay option (-r)
111 * ntpd statsdir:: statsdir option (-s)
112 * ntpd trustedkey:: trustedkey option (-t)
113 * ntpd user:: user option (-u)
114 * ntpd updateinterval:: updateinterval option (-U)
115 * ntpd wait-sync:: wait-sync option (-w)
116 * ntpd slew:: slew option (-x)
119 * ntpd mdns:: mdns option (-m)
130 @subsection ntpd help/usage (@option{--help})
136 (@option{--help}) or the @code{more-help} option (@option{--more-help}). @code{more-help} will print
138 @code{more-help} is disabled on platforms without a working
145 ntpd - NTP daemon program - Ver. 4.2.8p18
146 Usage: ntpd [ -<flag> [<val>] | --<name>[@{=| @}<val>] ]... \
148 Flg Arg Option-Name Description
149 -4 no ipv4 Force IPv4 DNS name resolution
150 - prohibits the option 'ipv6'
151 -6 no ipv6 Force IPv6 DNS name resolution
152 - prohibits the option 'ipv4'
153 -a no authreq Require crypto authentication
154 - prohibits the option 'authnoreq'
155 -A no authnoreq Do not require crypto authentication
156 - prohibits the option 'authreq'
157 -b no bcastsync Allow us to sync to broadcast servers
158 -c Str configfile configuration file name
159 -d no debug-level Increase debug verbosity level
160 - may appear multiple times
161 -D Num set-debug-level Set the debug verbosity level
162 - may appear multiple times
163 -f Str driftfile frequency drift file name
164 -g no panicgate Allow the first adjustment to be Big
165 - may appear multiple times
166 -G no force-step-once Step any initial offset correction.
167 -i --- jaildir built without --enable-clockctl or --enable-linuxcaps or --enable-solarisprivs
168 -I Str interface Listen on an interface name or address
169 - may appear multiple times
170 -k Str keyfile path to symmetric keys
171 -l Str logfile path to the log file
172 -L no novirtualips Do not listen to virtual interfaces
173 -n no nofork Do not fork
174 - prohibits the option 'wait-sync'
175 -N no nice Run at high priority
176 -p Str pidfile path to the PID file
177 -P Num priority Process priority
178 -q no quit Set the time and quit
179 - prohibits these options:
181 wait-sync
182 -r Str propagationdelay Broadcast/propagation delay
184 - prohibits these options:
186 wait-sync
187 -s Str statsdir Statistics file location
188 -t Str trustedkey Trusted key number
189 - may appear multiple times
190 -u --- user built without --enable-clockctl or --enable-linuxcaps or --enable-solarisprivs
191 -U Num updateinterval interval in seconds between scans for new or dropped interfaces
193 - may appear multiple times
195 - may appear multiple times
196 -w Num wait-sync Seconds to wait for first clock sync
197 - prohibits these options:
201 -x no slew Slew up to 600 seconds
203 -? no help display extended usage information and exit
204 -! no more-help extended usage information passed thru pager
211 - examining environment variables named NTPD_*
218 @subsection ipv4 option (-4)
219 @cindex ntpd-ipv4
234 @subsection ipv6 option (-6)
235 @cindex ntpd-ipv6
250 @subsection authreq option (-a)
251 @cindex ntpd-authreq
267 @subsection authnoreq option (-A)
268 @cindex ntpd-authnoreq
284 @subsection configfile option (-c)
285 @cindex ntpd-configfile
293 @subsection driftfile option (-f)
294 @cindex ntpd-driftfile
307 @subsection panicgate option (-g)
308 @cindex ntpd-panicgate
321 exits with a message to the system log if the offset exceeds the panic threshold, which is 1000 s by default. This option allows the time to be set to any value without restriction; however, this can happen only once. If the threshold is exceeded after that,
324 @code{-q}
326 @code{-x}
331 @node ntpd force-step-once
332 @subsection force-step-once option (-G)
333 @cindex ntpd-force-step-once
338 steps the time if the time offset exceeds the step threshold,
339 which is 128 ms by default, and otherwise slews the time.
341 so the highest time accuracy can be achieved quickly.
342 However, this may also cause the time to be stepped back
344 applications requiring monotonic time are running.
347 @subsection jaildir option (-i)
348 @cindex ntpd-jaildir
363 This option also implies that the server attempts to drop root privileges at startup.
365 @code{-u}
370 @code{--enable-clockctl}) or Linux (configure with
371 @code{--enable-linuxcaps}) or Solaris (configure with @code{--enable-solarisprivs}).
373 @subsection interface option (-I)
374 @cindex ntpd-interface
392 @subsection keyfile option (-k)
393 @cindex ntpd-keyfile
404 @subsection logfile option (-l)
405 @cindex ntpd-logfile
415 @subsection novirtualips option (-L)
416 @cindex ntpd-novirtualips
424 @subsection modifymmtimer option (-M)
425 @cindex ntpd-modifymmtimer
440 @subsection nice option (-N)
441 @cindex ntpd-nice
448 @subsection pidfile option (-p)
449 @cindex ntpd-pidfile
460 @subsection priority option (-P)
461 @cindex ntpd-priority
471 @subsection quit option (-q)
472 @cindex ntpd-quit
474 This is the ``set the time and quit'' option.
481 saveconfigquit, wait-sync.
490 @code{-g}
492 @code{-x}
494 Note: The kernel time discipline is disabled with this option.
496 @subsection propagationdelay option (-r)
497 @cindex ntpd-propagationdelay
504 @cindex ntpd-saveconfigquit
516 quit, wait-sync.
519 Cause @code{ntpd} to parse its startup configuration file and save an
523 @subsection statsdir option (-s)
524 @cindex ntpd-statsdir
533 @subsection trustedkey option (-t)
534 @cindex ntpd-trustedkey
548 @subsection user option (-u)
549 @cindex ntpd-user
565 @code{--enable-clockctl}) or Linux (configure with
566 @code{--enable-linuxcaps}) or Solaris (configure with @code{--enable-solarisprivs}).
568 @subsection updateinterval option (-U)
569 @cindex ntpd-updateinterval
573 Give the time in seconds between two scans for new or dropped interfaces.
576 Use 0 to disable scanning. 60 seconds is the minimum time between scans.
577 @node ntpd wait-sync
578 @subsection wait-sync option (-w)
579 @cindex ntpd-wait-sync
603 @subsection slew option (-x)
604 @cindex ntpd-slew
607 Normally, the time is slewed if the offset is less than the step threshold, which is 128 ms by default, and stepped if above the threshold.
609 Note: Since the slew rate of typical Unix kernels is limited to 0.5 ms/s, each second of adjustment requires an amortization interval of 2000 s.
612 @code{-g}
614 @code{-q}
619 Note: The kernel time discipline is disabled with this option.
622 @cindex ntpd-usepcc
639 @cindex ntpd-pccfreq
655 @subsection mdns option (-m)
656 @cindex ntpd-mdns
684 @subsubheading version (-)