rdate
—
set the system's date from a remote host
rdate
displays and sets the local date and time from the
host name or address given as the argument. It uses the RFC 868 protocol which
is usually implemented as a built-in service of
inetd(8).
Available options:
-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.
-p
- Do not set, just print the remote time
-s
- Do not print the time.
- /var/log/wtmp
- A record of date resets and time changes.