1) Get curl

sudo apt-get install curl

2) Build deps :

sudo apt-get install libgnomeui-dev librsvg2-dev libreadline5-dev libwnck-dev python2.5-dev libgstreamer-plugins-base0.10-dev libgl1-mesa-dev libffi-dev xulrunner-1.9-dev mesa-common-dev gtk-doc-tools subversion git-core bison flex

3) Exec the script

bash gnome-shell-build-setup.sh

4) Build the source

~/bin/jhbuild build

Replacing :

1) Go to the folder of the GNOME Shell:

cd ~/gnome-shell/source/gnome-shell/src

2) execute the command sequence to start the GNOME Shell:

./gnome-shell
./gnome-shell --replace

That's it enjoy.