CentOS 7.0 - man page for rdate (centos section 1)
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RDATE(1) Red Hat RDATE(1)
rdate - get the time via the network
rdate [-p] [-s] [-u] [-l] [-t sec] [host...]
rdate connects to an RFC 868 time server over a TCP/IP network, printing the returned time
and/or setting the system clock.
-p Print the time returned by the remote machine.
-s Set the system time to the returned time.
-u Use UDP instead of TCP as the transport.
-l Use syslog to output errors (cron.warning) and output (cron.info).
-t Set timeout in seconds for every attempt to retrieve date.
2004-03-16 Johan Nilsson <email@example.com>
Timeout support added.
2002-11-06 Elliot Lee <firstname.lastname@example.org>
Patch from Tomek Orzechowski <email@example.com> - alarm(10) to not wait forever
2001-05-23 Phil Knirsch <firstname.lastname@example.org>
Added UDP protocol support. Close the connection after message handling in confor-
mance to RFC 868.
2002-03-07 Elliot Lee <email@example.com>
Add syslog functionality.
2000-02-04 Elliot Lee <firstname.lastname@example.org>
Wrote it (previous incarnation had license problems, all 200 lines of it).
Utilities May 2001 RDATE(1)
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