Install truecrypt on ubuntu

Run a quick update
#apt-get update

You need to install the libgtk2.0-0 package, even though I have no GUI installed. Truecrypt requires this, as it doesn't allow you to install command-line only.
#apt-get install libgtk2.0-0

Once this is done you'll see an error since you don't have any other gtk/gui packages installed. To fix this simeply do:
#apt-get -f install

Now on to actually install truecrypt itself.

download you specific .deb package from truecrypt.org
I'm running the 64bit os so i grabbed:
Ubuntu - x64 (64-bit) .deb

Untar the package.
#tar zxvf truecrypt-6.1a-ubuntu-x64.tar.gz

Simply run the automatic setup
#./truecrypt-6.1a-setup-ubuntu-x64


NB:- tested on ubuntu 9.04