[CentOS] Help with at Bash script

[Hal Wigoda]

What is domain, BTW?

(Sent from iPhone, so please accept my apologies in advance for any spelling or grammatical errors.)

> On Dec 2, 2014, at 12:05 PM, James B. Byrne <byrnejb at harte-lyne.ca> wrote:
> 
> 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 at Harte-Lyne.ca
> 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
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos