To supress the output of the packet summary lines to the output you
can use the -q parameter.
Older versions of tethereal i belive had issues with -q and it did not
work properly.
I usually use -R "not frame" instead of -q as a habit instead.
Any of these two options will make tethereal only print the (if any)
-z statistics once it has reached the end of the capture file.
Most of the statistics in ethereal has a counterpart in tethereal
using the -z parameter.
The difference between ethereal and tethereal is that the first
requires interaction while the second often can be used successfully
in scripts and batch jobs.
On 10/19/05, Niklas Abrahamsson (KI/EAB)
<niklas.abrahamsson@xxxxxxxxxxxx> wrote:
> Hi,
>
> I've posted before about using tethereal for some analysis based on
> tcpdump-files from a network. While playing around with ethereal and
> tethereal I realised that I don't know what the difference between the two
> programs are or if there even is one? That was just something I took for
> granted that there was no difference.
>
> I've been trying to do something very simple to start with in tethereal and
> that is to get the average paketsize from a dump and save the results to a
> file. However what I get is basicly a copy of the dump-file since tethereal
> prints the packets to the file and not the result of the statisticquery. How
> would I do to only get the statistics written?
>
> The next step I wanted to go exploring is to get a output of the usage of
> different ports by the captured packets. I guess just to count the number of
> times all ports are used and save the results to a file. Is this possible?
>
> Thanks in advance,
>
> Nicklas
>
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