This is not for production usage, take extreme care! However, Gnome 3 installation will not affect your Gnome 2.* files.
Here are the steps:
- “sudo add-apt-repository ppa:ricotz/testing“
- “sudo apt-get update“
- “sudo apt-get install gnome-shell“
- “gnome-shell –replace“
You can use the “Window” key if you have any or click on the “Activity” on the top left corner of the screen to start using it.
To end your test:
Just go to the terminal from which you ran “gnome-shell” and end the command (ctrl+c for example).
Note: A strange behavior occurred with me; it respawned the gnome-panel for me, although I use Avant Window Navigator instead, no big deal anyway, I just killed the “gnome-panel” (“killall gnome-panel“) and “avant-window-navigator” (“killall avant-window-navigator“) and respawned the latter: “nohup avant-window-navigator &“, everything is back to normal now, I’ll keep you posted if I encounter anything new.
Quick Review:
Pros: Visually stunning, and I could easily reach any application or document I needed
Cons: Very buggy and still needs a lot of performance enhancement,well it’s an early beta, what would you expect?
Just Some Techie Notes! 
I don’t believe this method works anymore. I have tried several machines and I always get missing libjs0 xulrunner or something.
LikeLike
Are you using two -s when you type: GNOME-SHELL –REPLACE ? I know on the website it looks like one big dash, but it is actually two.
LikeLike