[KLUG Members] Shadowing a terminal

Adam Williams members@kalamazoolinux.org
Mon, 3 Dec 2001 22:54:15 -0500 (EST)


>>>>>>Is it possible to shadow a terminal?  I'm thinking of something
>>>>>>similar in nature to shadowing a citrix session but with a simple text
>>>>>>based console.  Is there a way to accomplish watching what someone else is
>>>>>>doing while they do it to assist in remotely assisting people.
>>>>>>Screen
>>>>>BTW, since you mentioned Citrix, I hope you know about X-Windows'
>>>>>inherit capabilites,
>>>>program runs on any host, and displays on any host.  I'm looking for
>>>>displays on two hosts.
>> For X you'd need xrfb0server to do that.
>Searching freshmeat and google for xrfb0server or xrfb yeilded nothing
>promising.  What is xrfb0server?

http://www.hexonet.de/software/x0rfbserver/

With VNC server on X you get a *new* X server,  so you see A display, but
not THE display.  VNC is an RFB (remote frame buffer) service, and an X
desktop is not an frame buffer (like a PC display), X11 is a network
protocol.  So VNC server on UNIX starts it's own X server whose "video
device" is a virtual frame buffer.

x0rfbserver is a *user* application that captures their $DISPLAY as a
virtual RFB so that VNC clients can see and use their desktop.  They see
it as an icon,  but it grabs the root window and tracks changes to it's
virtual FB.

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