There is several ways to do time synchronization with Debian :

  • ntpdate : for one time synchronization
  • ntp : provide a daemon for permanent synchronization

ntpdate is simplier, this page describe how to use it.


Installer the package :

  • ntpdate


ntpdate can be used directly on the command line :

# ntpdate pool.ntp.org
 6 Mar 22:24:06 ntpdate[7114]: step time server offset -4.566845 sec

Automatic synchronization

To make the time synchronization permanent, we will use cron, for example by adding the file /etc/cron.d/ntp with the following content :

59 * * * * root /usr/sbin/ntpdate pool.ntp.org >> /var/log/cron.log


  • /etc/cron.d/ntp
en/linux/ntp.txt · Last modified: 2011/01/08 12:46 by matthieu
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