tcpdump mailing list archives
Re: tcpdump: file.pcap0: Permission denied
From: Jerome Yanga <jerome.yanga () gmail com>
Date: Fri, 3 Feb 2012 16:04:44 -0800
Hi Mark, Here are the answers to your questions: The permissions on the /data directory is ... # ls -alh /data/ total 4.1M drwxr-xr-x 2 root root 4.0K Feb 3 15:21 . dr-xr-xr-x. 23 root root 4.0K Feb 3 06:49 .. -rw-r--r-- 1 root root 4.0M Feb 3 07:29 502_capture-seed.txt FYI, I am running the command as root. The first command does not work even without the shell expansion date command. I created the seed file using the following command. dd if=/dev/zero of=/data/502_capture-seed.txt bs=$(( 1024 * 1024 )) count=4 All I am doing is trying to run tcpdump so that it will create another file once it has reached 4MB (-C 4). I also want it to be limited to just 10 files(-W 10), to rotate to the next file every 5 minutes (-G 300), and to be compressed everytime it creates a new file (-z bzip2). jerome On Fri, Feb 3, 2012 at 12:15 PM, Mark W. Jeanmougin <mark.jeanmougin () cchmc org> wrote:
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 deniedWhat 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.txtIt 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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Current thread:
- tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 03)
- Re: tcpdump: file.pcap0: Permission denied Mark W. Jeanmougin (Feb 03)
- Re: tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 03)
- Re: tcpdump: file.pcap0: Permission denied Mark W. Jeanmougin (Feb 06)
- Re: tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 06)
- Re: tcpdump: file.pcap0: Permission denied Mark W. Jeanmougin (Feb 06)
- Re: tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 03)
- Re: tcpdump: file.pcap0: Permission denied Mark W. Jeanmougin (Feb 03)
- Re: tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 06)
- Re: tcpdump: file.pcap0: Permission denied Mark W. Jeanmougin (Feb 06)
- Re: tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 06)
- Re: tcpdump: file.pcap0: Permission denied Jerome Yanga (Feb 06)