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  #5 (permalink)  
Old 10-12-2008
otheus's Avatar
otheus otheus is offline Forum Staff  
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Join Date: Feb 2007
Location: Innsbruck, Austria
Posts: 1,886
MrC is so right! Just a few tweaks to get what you want. This monlist ALSO prints "peers", meaning Stratum 1 hosts. What I do is print the peers, and exclude those from the monlist. Observe:
Code:
 # get peers
 /usr/sbin/ntpdc -n -c listpeers |awk '{print $2}' >/tmp/peers.$$

 # get all hosts connected to this ntp server
 /usr/sbin/ntpdc -c monlist |awk '{ print $1 }' | 
    fgrep -v -f /tmp/peers.$$    # exclude those from the first list
 rm -f /tmp/peers.$$
Afterwards, you might want to do forward IP host resolution on the list. The reason I use the -n command is because the ntpdc output chops long hostnames off at a certain column, rendering the grep trick useless.