Untuk menginstall Gnome Shell extension, tambahkan PPA berikut :
sudo add-apt-repository ppa:upubuntu-com/ext
sudo apt-get update
kemudian install beberapa extension dengan perintah di bawah ini :
1. Auto Hide Top Panel
sudo apt-get install autohidetopbar-ext
2. GnomeShell Reflection
sudo apt-get install reflection-ext
3. QuickLaunch
sudo apt-get install quicklaunch-ext
4. Brightness Control
sudo apt-get install brightness-control-ext
5. Favorites Menu
sudo apt-get install favorites-ext
6. Touchpad Indicator
sudo apt-get install touchpadindicator-ext
7. Shell Restart User Menu Entry
sudo apt-get install restartentry-ext
8. Status only icon
sudo apt-get install statusonlyicon-ext
9. Hide Dash
sudo apt-get install hidedash-ext
10. Battery remaining time and percentage
sudo apt-get install batteryremainingtime-ext
11. Advanced Volume Mixer
This extension helps users control volume of each running program separately. Install it with this command:
sudo apt-get install volumemixer-ext
12. system-monitor
sudo apt-get install system-monitor-ext
13. AlternateTab
sudo apt-get install alternatetab-ext
14. Trash
sudo apt-get install trash-ext
15. Frippery Panel Favorites
sudo apt-get install panelfavorites-ext
16. Frippery Bottom Panel
sudo apt-get install bottompanel-ext
17. NetSpeed
sudo apt-get install netspeed-ext
18. Removable Drive Menu
sudo apt-get install drivemenu-ext
19. Frippery Applications Menu
sudo apt-get install applicationsmenu-ext
20. Overview Icon
sudo apt-get install overviewicon-ext
Sumber : http://www.upubuntu.com/2012/05/collection-of-20-top-extensions-for.html