running a tcpdump in the background

neil_payne · 11-08-2010, 09:26 AM

when attempting to run a tcdump in the background (IPSO) with the following command:

tcpdump & -w filename.pcap -s 1500 -i eth3c0 host 10.10.10.1 &

I get the message:
tcpdump: an interface name must be supplied

however the command runs fine without the '&' at the end of the line
are there syntax restrictions in using the '&' flag?

macemoneta · 11-08-2010, 02:24 PM

You have a typo:

Code:

tcpdump & -w filename.pcap -s 1500 -i eth3c0 host 10.10.10.1 &

neil_payne · 11-16-2010, 03:35 AM

that's it - thanks