Re: tcpdump: file.pcap0: Permission denied

[Jerome Yanga <jerome.yanga () gmail com>]

Mark,

I tried something and it seems to work now.

I created the file /data/capture_rotate_`date +%Y_%m_%d`.pcap2 first
and changed its permission to how you suggested prior to running
tcpdump and it started working properly.

I picked 65535 so I can capture the everything.  Though it should be
the default, I just wanted to make sure that it is what I am
capturing.

Thanks you for the help.  :)

jerome

On Mon, Feb 6, 2012 at 7:58 AM, Mark W. Jeanmougin
<mark.jeanmougin () cchmc org> wrote:
> Hey Jerome,
>
> I should've been more specific. I wanted to see permissions and ownership on
> the files created by tcpdump. How about:
>
> tcpdump -i eth0 -s 65535 -w /data/capture_rotate_`date +%Y_%m_%d`.pcap1
>
> tcpdump -i eth0 -s 65535 -w /data/capture_rotate_`date +%Y_%m_%d`.pcap2\
> -C 4
>
> ls -al /data/
>
> Also, I tend to do '-s 0'. Why did you pick 65535, anyway? I'm struggling on
> that one...
>
> Thanks,
>
> MJ
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