[dns-operations] dnscap -> dnspcap, and some notes about ncap

Joao Damas Joao_Damas at isc.org
Tue Aug 21 16:36:29 UTC 2007

problem here is the general shortness of the alphabet.
Paul wants to stay away from capital letter options as much as  
possible because DOS/WIN folds everything into the same case.
-p is commonly used for promiscuous, and we are trying to not use  
capital P, -u was the less awkward choice (or so it seemed)
-i is used in all tcpdump family tools to mean the interface, not the  
input file.
-d is avaiable and can be used for direction
I have no problem with using -w instead of -o (with -r for input,  
given that -i means interface), though I have seen plenty usage of  
all combinations.


On 21 Aug 2007, at 07:03, Robert Story wrote:

> On Mon, 20 Aug 2007 14:48:43 -0700 Joao wrote:
> JD> And so, this is the new proposed set of command line switches (the
> JD> changes) and we would like to collect any comments people might  
> have
> JD> on them.
> JD>
> JD> -u port : TCP/UDP port to capture traffic on
> JD> -p : promiscuous capture
> JD> -r input file
> I'd suggest trying to keep in line with common command line options  
> for
> many other programs, and would change :
>  -p port : TCP/UDP port to capture traffic on
>  -i : input file
> If the command is going to take and interface command, then maybe -i
> would be reserved for that, in which case I'd suggest -f for input  
> file.
> Using p for port means you need something else for promiscuous, so I'd
> suggest :
>  -P : promiscuous capture
> -- 
> Robert Story

More information about the dns-operations mailing list