Unix Tip: PING THE HOST TABLE

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3574 - November 21, 2012

http://www.ugu.com/sui/ugu/show?tip.today

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PING THE HOST TABLE

Here is a quick way to ping all the hosts in your host table.
NOTE: Just make sure that there are no blank lines in it, and
verify the ping command on your system exist after one ping. Your
mileage may differ slightly.

$ grep -v "#" /etc/hosts | awk '{print $1}' | while read host
> do
> ping -c 1 $host
> done

Or script it:

#!/bin/sh
grep -v "#" /etc/hosts | awk '{print $1}' | while read host
do
ping -c 1 $host
done




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