I was very interested in this option as well (which is why I am on this list).  I was not able to find a good solution with iftop but I did find another utility called &#39;bwm-ng&#39; that has an output to csv option which suited my needs.<br>
<br><a href="http://www.gropp.org/?id=projects&amp;sub=bwm-ng">http://www.gropp.org/?id=projects&amp;sub=bwm-ng</a><br><br>Here is an example of how I used it:<br><br>bwm-ng --count 0 -o csv -I eth0 -T rate -u bytes -t 1000 &gt; yourfile.csv<br>
<br>Thanks,<br>Andy<br><br><div class="gmail_quote">On Sun, Sep 27, 2009 at 11:03 AM, Roman Weidlich <span dir="ltr">&lt;<a href="mailto:roman.weidlich@univie.ac.at">roman.weidlich@univie.ac.at</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br>
<br>
is it possible to log to a file?<br>
<br>
iftop &gt; mylog.txt<br>
<br>
produces a file, but containing lo senseful data.<br>
<br>
Roman<br>
<br>
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</blockquote></div><br>