Hello Linux Geeksters. As you may already know, TrueCrypt is an open source disk encryption tool. Because it uses a tray icon, but the tray icon support on Ubuntu has been removed, a third party developer patched TrueCrypt to use an AppIndicator instead.
In this article I will show you how to install TrueCrypt with an Ubuntu AppIndicator on Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal and Ubuntu 12.04 Precise Pangolin, via PPA:
Add the PPA:
$ sudo add-apt-repository ppa:stefansundin/truecrypt
Update local repos:
$ sudo apt-get update
$ sudo apt-get install truecrypt