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Old 03-24-2009, 12:25 AM   #1
noir911
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Registered: Apr 2004
Location: Baltimore, MD
Posts: 681

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tshark output to file


I'm trying to get tshark output to file but it's not working

Tried:

Quote:
tshark -i eth0 -n port 68 -R 'bootp.type == 2' -o
column.format:'"Source MAC","%hs"' > /tmp/capture &
but get nothing in the file. ps -ef | grep shark shows tshark -i eth0
-n port 68 -R bootp.type == 2 -o column.format:"Source MAC","%hs"

pkill tshark - and I get the /tmp/capture file with all the entries!

Also tried

tshark -i eth0 -n port 68 -R 'bootp.type == 2' -o
column.format:'"Source MAC","%hs"' | tee /tmp/file

nothing in the file and when I do ctrl-c, I get entries in the file.
 
Old 03-25-2009, 07:17 AM   #2
chrism01
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Registered: Aug 2004
Location: Sydney
Distribution: Centos 6.5, Centos 5.10
Posts: 16,311

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Sounds like you're Suffering from Buffering http://perl.plover.com/FAQs/Buffering.html (its not just a Perl thing btw)
 
  


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