ntpdate.1m (2010 09)

ntpdate(1M) ntpdate(1M)

-q Prints the offset measurement, stratum of the server(s) and delay measurement without

adjusting the local clock. This is similar to

-d option which gives a more detailed debug-

ging information.

-s Divert logging output from the standard output (default) to the system

syslog (see

syslog (3C)) facility. This is designed primarily for convenience of

cron scripts.

-t timeout Specify the maximum waiting time for a server response as the value timeout, in seconds

and fraction. The value is rounded to a multiple of 0.2 seconds. The default is 1 second, a

value suitable for polling across a LAN.

-u Direct ntpdate to use an unprivileged port for outgoing packets. This is most useful

when behind a ﬁrewall, that blocks incoming trafﬁc to privileged ports, and you want to

synchronise with hosts beyond the ﬁrewall. Note that the

-d option always uses

unprivileged ports.

-v Prints the

NTP version number and the offset measurement information.

AUTHOR

ntpdate was developed by Dennis Ferguson at the University of Toronto.

FILES

/etc/ntp.keys Contains the encryption keys used by

ntpdate.