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@ -1,4 +1,4 @@ |
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.\" $OpenBSD: ntpd.8,v 1.22 2007/12/07 20:05:32 jmc Exp $ |
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.\" $OpenBSD: ntpd.8,v 1.23 2007/12/11 11:26:27 jmc Exp $ |
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.\" |
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.\" Copyright (c) 2003, 2004, 2006 Henning Brauer <henning@openbsd.org> |
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.\" |
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@ -14,7 +14,7 @@ |
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.\" AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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.\" OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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.\" |
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.Dd $Mdocdate: December 7 2007 $ |
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.Dd $Mdocdate: December 11 2007 $ |
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.Dt NTPD 8 |
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.Os |
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.Sh NAME |
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@ -39,6 +39,40 @@ as described in RFC 2030, |
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and the Network Time Protocol version 3, |
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as described in RFC 1305. |
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.Pp |
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The options are as follows: |
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.Bl -tag -width "-f fileXXX" |
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.It Fl d |
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Do not daemonize. |
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If this option is specified, |
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.Nm |
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will run in the foreground and log to |
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.Em stderr . |
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.It Fl f Ar file |
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Use |
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.Ar file |
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as the configuration file, |
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instead of the default |
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.Pa /etc/ntpd.conf . |
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.It Fl n |
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Configtest mode. |
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Only check the configuration file for validity. |
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.It Fl S |
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Do not set the time immediately at startup. |
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This is the default. |
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.It Fl s |
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Set the time immediately at startup if the local clock is off by more |
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than 180 seconds. |
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Allows for a large time correction, |
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eliminating the need to run |
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.Xr rdate 8 |
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before starting |
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.Nm . |
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.It Fl v |
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This option allows |
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.Nm |
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to send DEBUG priority messages to syslog. |
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.El |
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.Pp |
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.Nm |
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uses the |
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.Xr adjtime 2 |
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@ -63,11 +97,10 @@ system call to compensate for systematic drift. |
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.Pp |
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.Nm |
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is usually started at boot time, and can be enabled by |
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setting the following in |
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.Pa /etc/rc.conf.local : |
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.Pp |
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.Dl ntpd_flags=\&"\&" |
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.Pp |
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setting |
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.Va ntpd_flags |
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in |
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.Pa /etc/rc.conf.local . |
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See |
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.Xr rc 8 |
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and |
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@ -77,59 +110,25 @@ and enabling daemons. |
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.Pp |
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When |
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.Nm |
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starts up, it reads settings from a configuration file, |
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starts up, it reads settings from its configuration file, |
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typically |
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.Xr ntpd.conf 5 . |
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.Pp |
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The options are as follows: |
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.Bl -tag -width "-f fileXXX" |
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.It Fl d |
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Do not daemonize. |
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If this option is specified, |
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.Nm |
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will run in the foreground and log to |
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.Em stderr . |
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.It Fl f Ar file |
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Use |
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.Ar file |
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as the configuration file, |
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instead of the default |
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.Pa /etc/ntpd.conf . |
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.It Fl n |
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Configtest mode. |
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Only check the configuration file for validity. |
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.It Fl S |
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Do not set the time immediately at startup. |
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This is the default. |
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.It Fl s |
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|
Set the time immediately at startup if the local clock is off by more |
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|
than 180 seconds. |
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|
Allows for a large time correction, |
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|
eliminating the need to run |
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|
.Xr rdate 8 |
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before starting |
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.Nm . |
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.It Fl v |
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This option allows |
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.Nm |
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to send DEBUG priority messages to syslog. |
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.El |
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.Xr ntpd.conf 5 , |
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and its initial clock drift from |
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.Pa /var/db/ntpd.drift . |
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Clock drift is periodically written to the drift file thereafter. |
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.Pp |
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When |
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.Nm |
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receives a |
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.Dv SIGINFO |
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signal, it will write its peer and sensor status to syslog. |
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signal, it writes its peer and sensor status to |
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.Xr syslog 3 . |
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.Sh FILES |
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.Bl -tag -width "/var/db/ntpd.driftXXX" -compact |
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.It Pa /etc/ntpd.conf |
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default |
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.Nm |
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configuration file |
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Default configuration file. |
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.It Pa /var/db/ntpd.drift |
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drift file, written by |
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.Nm |
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periodically and used at startup to get the initial clock drift |
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Drift file. |
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.El |
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.Sh SEE ALSO |
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.Xr date 1 , |
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