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UGU: Unix Guru Universe - Unix Tip #4617- November 1, 2025
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Unix Tip #4617- November 1, 2025
PING THE HOST TABLE
There's no need to grep and
pipe the output into awk
(you can "grep" with awk.)
awk '/^[0-9]/{print $1}' /etc/hosts |xargs -l ping -c 1 $1
This tip generously supported by: bmaclean@silverplatter.com
And another:
awk '/^[^#]/ {system("ping -c 1 "$1)}' < /etc/hosts
This tip generously supported by: maddox@xmission.com
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.
LAST 5 TIPS
4616
- USES FOR AWK
4615
- PERL FIND AND REPLACE
4614
- BE ALARMED
4613
- NUMBERING A FILE
4612
- BACKING UP FILES
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