Help with at Bash script

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



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

_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos




[Index of Archives]     [CentOS]     [CentOS Announce]     [CentOS Development]     [CentOS ARM Devel]     [CentOS Docs]     [CentOS Virtualization]     [Carrier Grade Linux]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Linux USB]
  Powered by Linux