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A few more GNOME Shell extensions have been updated for GNOME Shell 3.4/3.4.1 and are now available for Ubuntu 12.04 Precise Pangolin in the WebUpd8 GNOME 3 PPA: Classic Systray, Message Notifier and Notesearch.

To use any of the extensions below, firstly add the WebUpd8 GNOME 3 PPA:
sudo add-apt-repository ppa:webupd8team/gnome3
sudo apt-get update

gnome shell classic systray extension

GNOME Shell Classic Systray extension (previously known as GNOME Shell GNOME 2 notifications) moves the icons from the GNOME Shell message tray to the top bar. It doesn't move the notifications, but only application icons (tray applets / icons) like for instance Dropbox, Jupiter Applet and so on.

To install GNOME Shell Classic Systray in Ubuntu 12.04 or 11.10, use the following command:
sudo apt-get install gnome-shell-classic-systray

gnome shell message notifier extension

GNOME Shell Message Notifier shows how many conversations with unread messages you have on the top GNOME Shell bar. It works with Empathy, email clients like Mailnag and basically any application that displays notifications with the number of unread messages. Note that the number displayed by the extension is the number of conversations with new messages and not the total number of messages.

The extension was updated recently and besides support for GNOME Shell 3.4, the extension now shows where the notifications come from when you press the icon on the GNOME Shell top bar.

To install GNOME Shell Message Notifier in Ubuntu 12.04 or 11.10, use the following command:
sudo apt-get install gnome-shell-message-notifier

After activating the extension using GNOME Tweak Tool, the extension may show up as disabled but it actually still works.

gnome shell notesearch extension

GNOME Shell Notesearch is an extension that can be used to search for Gnote or Tomboy notes in GNOME Shell Overview. Install it using the following command:
sudo apt-get install gnome-shell-extension-notesearch

By default, the extension searches for Gnote notes. To set it to use Tomboy instead, use the following command:
gsettings set com.github.charkins.notesearch app Tomboy
And to switch back to Gnote, use:
gsettings set com.github.charkins.notesearch app Gnote

I've also updated the official GNOME Shell extensions to support the latest GNOME Shell 3.4.1 (they were broken after a recent update; sorry for the delay!) which is available in Ubuntu 12.04 Precise Pangolin. See our previous post about extensions updated for GNOME Shell 3.4 and Ubuntu 12.04 Precise Pangolin: Official GNOME Shell Extensions, Weather, System Monitor, MediaPlayer And GPaste Available For GNOME Shell 3.4 [PPA - Ubuntu 12.04]