Remove ubuntu-desktop and Install ubuntu-desktop

Hello,
I followed the instructions below link
Link

Remove ubuntu-desktop and the accessories

and run this command::
sudo apt-get purge gnome-shell
and then i dont have Desctop ,now!!
how can i install it ,again ??
thank alot…

I’m not brave enough to remove my software to test, but does this work?
sudo apt-get install gnome-shell