Manual Reference Pages  - 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 (
-t Set timeout in seconds for every attempt to retreive date.


2004-03-16 Johan Nilsson <>
  Timeout support added.
2002-11-06 Elliot Lee <>
  Patch from Tomek Orzechowski <> - alarm(10) to not wait forever for connections.
2001-05-23 Phil Knirsch <>
  Added UDP protocol support. Close the connection after message handling in conformance to RFC 868.
2002-03-07 Elliot Lee <>
  Add syslog functionality.
2000-02-04 Elliot Lee <>
  Wrote it (previous incarnation had license problems, all 200 lines of it).

Utilities RDATE (1) May 2001
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