Date: Sun, 17 Mar 1996 09:19:57 -0800 (PST) From: Robert Du Gaue <rdugaue@calweb.com> To: Donald Burr <d_burr@ix.netcom.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: How to use the 'snp' devices? Message-ID: <Pine.BSF.3.91.960317091600.12745C-100000@web1.calweb.com> In-Reply-To: <Pine.BSF.3.91.960317044123.22835A-100000@starfleet.gov>
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> I compiled in the 'snp' pseudo-device into my kernel, which supposedly
> allows you to 'snoop' on any Tty/Vty/Pty in your system. I'd like to use
> this for when I'm in X windows, so I can monitor the status of some
> programs still running in text-mode VC's without having to switch out of
> X. How can I do this? I know I use the "tcpdump" program to use the bpf
> pseudo-device, is there a similar command to use the snp devices?
I assume you used :
pseudo-device snp 2
Where here we're defining two snp devices..
>
> Also, how do I make the devices in the /dev directory for snp devices?
> MAKEDEV does not seem to have any commands to make them...
And then:
bash# ls sn*
snp0 snp1
bash# ./MAKEDEV snp2
bash# ls snp*
snp0 snp1 snp2
bash#
Worked fine here, though you're right, it's not too well define in
./MAKEDEV (someone should probably put a comment in there...) :-) Here
is the section that creates it though in case yours is missing it for
some reason:
snp?)
unit=`expr $i : 'snp\(.*\)'`
rm -f snp$unit
mknod snp$unit c 53 $unit
chown root.wheel snp$unit
;;
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