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UGU: Unix Guru Universe - Unix Tip #4590- October 5, 2025
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Unix Tip #4590- October 5, 2025
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
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
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