Re: How to tell if someone is connected via vnc

[Olivier Robert]

Hi,

I would check for established VNC connections this way:

netstat -tape | grep ESTABLISHED | grep Xvnc

As for warning connected users. If you see there is an established vnc
session on port 5902, you could simply do:

export DISPLAY=:2.0; xmessage -center -timeout 60 -file shutdown.txt >
/dev/null 2>&1

You could create a list of established connections, translate it to active
displays (5902 -> 2.0 | 5903 -> 3.0 ...) and send out a message.

Hope it helps
Olivier

2008/1/31, Henning Larsen :
> Thanks for the answer :)
>
> I have made a file "ww" that is executable containing:
>
> "netstat -an | grep ESTABLISHED | grep -v 127.0.0.1".
>
> Is this sufficient to tell if any are connected / logged in?
> Is there any way to tell people logged in via vnc that I am going to
> reboot the system? something like 'wall'?
>
> Henning Larsen
>
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