I am attempting to get a script borrowed from DJB to work on my CentOS-6.6
box. Simplified it looks like this:
tcpdump -l -n -e port 53 \
| awk '{if ($14 ~ /A.*?/) print $15}' \
| while read domain ; do echo $domain ; done ;
The sticking point is the 'while read' construct. Run just as 'tcpdum | awk'
I get this:
english.stackexchange.com.
www.urbandictionary.com.
www.urbandictionary.com.
www.urbandictionary.com.
www.urbandictionary.com.
api.mywot.com.
a.udimg.com.
a.udimg.com.
fonts.googleapis.com.
. . .
Run with the 'while read $domain ; do echo ' pipe nothing appears whatsoever.
What am I doing wrong?
--
*** E-Mail is NOT a SECURE channel ***
James B. Byrne mailto:ByrneJB@xxxxxxxxxxxxx
Harte & Lyne Limited http://www.harte-lyne.ca
9 Brockley Drive vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada L8E 3C3
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