Eclipse Ganymede on Ubuntu

(These steps assume you already have a version of Eclipse installed under /opt.)

1. Download Eclipse Ganymede
2. Untar the downloaded file.
3. Change to the /opt directory.
4. Rename the previous /opt/eclipse installation.
5. Move the ganymede folder to /opt.

Like this:

$ wget http://ftp.osuosl.org/pub/eclipse/technology/epp/downloads/release/ganymede/R/eclipse-jee-ganymede-linux-gtk.tar.gz 

$ tar xzvf eclipse-jee-ganymede-linux-gtk.tar.gz 

$ cd /opt 

$ sudo mv eclipse eclipse-europa 

$ sudo mv ~/eclipse . 

You should now be able to launch Eclipse Ganymede using the same shortcuts or scripts as before.