Gloobus Preview is an quick file previewer which supports images, documents (pdf, odf, ods, etc.), source files, audio (mp3, wav, ogg and more), video (avi, ogg, mkv, flv, etc.), folders, archives, fonts, plain text files and more.
GNOME 3.2 got its own file previewer: GNOME Sushi, but what if you want to use Gloobus Preview instead (the main reason for this being that Gloobus Preview supports more file types)?
Using Gloobus Preview without Nautilus Elementary requires you to firstly use CTRL + C, then the Gloobus Preview keyboard shortcut and that's too many keys for a quick preview. Further more, this method doesn't even work with Nautilus 3.2. So Alexandr Grigorcea (one of the Gloobus Preview developers) has created a python script that replaces the new GNOME Sushi with Gloobus Preview so you can use the space key for quickly previewing files.
Replace GNOME Sushi with Gloobus Preview
To replace GNOME Sushi with Gloobus Preview, you need to install Gloobus Preview as well as a package called Gloobus Sushi. In Ubuntu 11.10, use the commands below:
sudo add-apt-repository ppa:gloobus-dev/gloobus-preview sudo apt-get update sudo apt-get install gloobus-preview gloobus-sushi
For Arch Linux, Gloobus Sushi can be found in AUR.
If you use an older Ubuntu version, you don't need this: just install Gloobus Preview and Nautilus Elementary.