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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 (

       -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                          May 2001                           RDATE(1)