Ethereal-dev: Re: [ethereal-dev] patch and file for 802.1q vlan support

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From: Guy Harris <guy@xxxxxxxxxx>
Date: Wed, 20 Oct 1999 15:49:14 -0700 (PDT)
> I should be able to get a whole variety of different things for that. Is
> there an easy way to save a filtered capture file from within ethereal
> (i.e. just the matching packets)?

Not yet.  Currently, "Save" and "Save As" just copy the raw bytes of the
capture file; at some point, I plan to have it write out the packets
using Wiretap's stuff for writing out capture files, which would let us
have a "save filtered/save all" option in the "Save" dialog box (and
also have a "save as type XXX" option, as well - a while ago, somebody
asked for the ability to save a file as a Sniffer file).

> I thought I remembered seeing some way
> to do it from the command line, but I'm not sure.

You might be thinking of the "read filter", which can be specified on
the command line, or in the "File/Open" dialog box; however, given the
way "Save" and "Save As" work, that doesn't affect what gets saved.