[TriLUG] Best NTP Client for Linux

Andrew Perrin clists at perrin.socsci.unc.edu
Tue Apr 29 08:44:50 EDT 2003


You shouldn't need to pipe it through date; according to man ntpdate:

DESCRIPTION
       ntpdate sets the local date and time by polling  the  Net
       work  Time  Protocol  (NTP)  server(s) given as the server
       arguments to determine the correct time. It must be run as
       root  on  the local host.
...

       -q     Query only - don't set the clock.


My debian system has the following in /etc/init.d/ntpdate:

#! /bin/sh

test -f /usr/sbin/ntpdate || exit 0
test -f /etc/default/ntp-servers || exit 0

. /etc/default/ntp-servers

test -n "$NTPSERVERS" || exit 0

case "$1" in
start|restart|force-reload)
  echo -n "Running ntpdate to synchronize clock"
  /usr/sbin/ntpdate -u -b -s $NTPSERVERS
  echo "."
  ;;
stop)
  ;;
*)
  echo "Usage: /etc/init.d/ntpdate {start|stop|restart|force-reload}"
  exit 1
esac

exit 0


----------------------------------------------------------------------
Andrew J Perrin - http://www.unc.edu/~aperrin
Assistant Professor of Sociology, U of North Carolina, Chapel Hill
clists at perrin.socsci.unc.edu * andrew_perrin (at) unc.edu


On Tue, 29 Apr 2003, bp wrote:

> ntpdate rackety.udel.edu|date
>
> This is probably a pretty cheap way of doing things but I had ntpdate on
> my system and the above line seems to do the job.  Unless I'm over
> looking something (let me know) I'm just going to throw that line in
> cron to run every morning.
>
> Thanks - bp
> Got the time server list from:
> http://www.eecis.udel.edu/~mills/ntp/clock1a.html
>
> bp wrote:
> <snip/>
>
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