Ntp
From Wsms
Note: This page should be titled ntp (all lowercase). It is Ntp due to technical limitations of Mediawiki.
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ntp
ntp is the name of the package on Debian/Ubuntu/Linuxmint systems that contains the ntpd, the ntp deamon. The ntp deamon keep your system clock in sync with a time source on the network. NTP also stands for Network Time Protocol.
installation
On Debian/Ubuntu/Linuxmint, you can install the ntp using Synaptic or from the command line with:
root@lincoln:~# apt-get -y install ntp
configuration
If you have a LAN with several Linux boxes, you probably want one Linux machine use a NTP server on the internet and the rest of your machines to use the first machine as there server.
FIXME: Howto configure the server???
limitations
If your system clock is more than a few minutes off, ntpd may not be albe to sync it. In this case you want to manually intervene with:
root@lincoln:~# /etc/init.d/ntp stop ... root@lincoln:~# ntpdate pool.ntp.org ... root@lincoln:~# /etc/init.d/ntp start ...
Also, ntpd doesn't work well on some vitrual machines beacuse the clocks drift too quickly, see 20061215
cavaets
If you have a dual boot (Windows/Linux) box, make sure that Linux uses the system clock set to local time rather than UTC. See UTC.
see also
Linux commands
ntpd
http://www.linuxjournal.com/article/8412
20061215
