Re: tcpdump: file.pcap0: Permission denied

["Mark W. Jeanmougin" <mark.jeanmougin () cchmc org>]

Hey Jerome,

On 02/03/2012 01:53 PM, Jerome Yanga wrote:
> When I attempt to run the following command...
>
> tcpdump -i eth0 -s 65535 -w /data/capture_rotate_`date +%Y_%m_%d`.pcap
> -C 4 -W 10 -G 300 -z bzip2 -F /data/capture-seed.txt
>
> ...I get the following error.
> tcpdump: /data/capture_rotate_2012_02_03.pcap0: Permission denied

What are the permissions on the /data/ directory? Does the first command 
work without the shell expansion date command?

> The seed file is just a 4MB file that I had created using dd.
> -rw-r--r-- 1 root root 4.0M Feb  3 07:29 /data/502_capture-seed.txt

It looks like the '-F' is for a tcpdump style filter. I'm not sure how 
you'd create that with dd...

Good luck,

MJ

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