Re: tcpdump -v option

[Guy Harris <guy () alum mit edu>]

Chris Pawelko wrote:
> I am using tcpdump with the -w and -v options.

Presumably meaning that you're sometimes using tcpdump with -w and other 
times using tcpdump with -v - if "-w" is being used, it's writing a raw 
binary capture to the file, not writing a dissected text display of the 
packets, so "-v" doesn't have any effect, so you wouldn't use both of 
them at the same time.

> I was wondering if there is
> a way of getting the -v output (example: got 265) into either a text file

Welcome to UN*X; tcpdump's text output goes to the standard output, so, 
from the command line, you just redirect the standard output to a file:

        tcpdump -v >text_file

(That also works with the Windows command line, using WinDump.)

> or if using something like php into a variable?

If PHP lets you run a command and stuff the standard output into a 
variable (meaning the PHP interpreter would redirect the command's 
standard output to a pipe), then that should work with tcpdump.
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