ODOC: rdate

rdate — Get the time from Remote machine.

Summary :

It connects to an Remote Time Server over a TCP/IP network, printing the returned time and/or setting the system clock. The time in remote server is maintained properly. So that all machines can get the time from that server.


$ rdate -p — Print the time returned by the remote machine.

$ rdate -s remote.pc.com — Set the system time to the time returned by the remote machine (Need Root permission).

$ rdate -u myserver — Use UDP instead of TCP as the transport.

$ rdate -l myserver — Use syslog to log errors and output (Useful when it is used in cron jobs).


  • Remote server should run the time service in port 37.
  • Firewall should not block port 37.

Read : man rdate

rdate,odoc, linux,gnu/linux, date, time, remote+system