Xpra is a tool which allows you to run X programs — usually on a remote host — and then direct their display to your local machine, disconnect from these programs, and reconnect from the same or another machine, all without losing any state. It differs from standard X forwarding in that it allows disconnection and reconnection without disrupting the forwarded application; it differs from VNC and similar remote display technologies in that xpra is rootless: i.e., applications forwarded by xpra appear on your desktop as normal windows managed by your window manager, rather than being all "trapped in a box together". Xpra also uses a custom protocol that is self-tuning and relatively latency- insensitive, and thus is usable over network connections that are too slow or unreliable for standard X forwarding.
To install the xpra package, simply use your favorite package manager. Note that this package only exists in Ubuntu 9.10 or later.
sudo apt-get install xpra
xpra start :7
- Start an xpra server using display number :7.
- Start firefox running inside the xpra server. No window will appear.
- Show a list of xpra servers you have running on the current host.
xpra attach :7
- Attach to the xpra server that is using local display number :7. Any apps running on that server will appear on your screen.
xpra attach ssh:frodo:7
- Use ssh to attach to the xpra server that is running on machine frodo and using display :7. Any apps running on that server will appear on your local screen.
xpra start :7 && DISPLAY=:7 screen
- Start an xpra server and a screen(1) session. If any of the applications inside screen attempt to use X, they will be directed to the xpra server.
xpra stop :7
- Stop the xpra server on display number :7.
https://help.ubuntu.com/community/Screen - GNU Screen
http://partiwm.org/wiki/xpra - Official Website.
http://en.wikipedia.org/wiki/Xpra - Wikipedia Article.