MirBSD manpage: rdate(8)

RDATE(8)                 BSD System Manager's Manual                  RDATE(8)


     rdate - set the system's date from a remote host


     rdate [-346adnprsv] [-P ntpport] host


     rdate displays and sets the local date and time from the host name or ad-
     dress given as the argument. The time source may be an RFC 868 TCP proto-
     col server, which is usually implemented as a built-in service of
     inetd(8), or an RFC 2030 protocol SNTP/NTP server. By default, rdate uses
     the RFC 868 TCP protocol.

     The options are as follows:

     -3      Sets the NTP protocol version to 3.

     -4      Forces rdate to use IPv4 addresses only.

     -6      Forces rdate to use IPv6 addresses only.

     -a      Use the adjtime(2) call to gradually skew the local time to the
             remote time rather than just hopping.

     -d      Debug the SNTP exchange. If given twice, debug each packet re-

     -n      Use SNTP (RFC 2030) instead of the RFC 868 time protocol.

     -P ntpport
             With -n, use the UDP port ntpport instead of the default 123.

     -p      Do not set, just print the remote time.

     -r      Show the remainder from the last adjtime(2) call.

     -s      Do not print the time. If set, any previous -v options will be

     -v      Verbose output. Always show the adjustment. Put this on a command
             line to reset all previous -s options.


     /var/log/wtmp  record of date resets and time changes


     date(1), adjtime(2), crontab(1), gettimeofday(2), symlink(7), inetd(8),
     ntpd(8), timed(8)

MirBSD #10-current            December 25, 2018                              1

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