ebook-convert not working (linux)

Hi,

I have several books to convert (mobi to epub) so I installed calibre via Synaptic package manager and the installation seemed to go fine.

As I just want to convert files at the moment I tried the command line:

ebook-convert (etc) and received the following error:

The program 'ebook-convert' is currently not installed. You can install it by typing:
sudo apt-get install calibre

I ran Calibre from the gui and went for the conversion tool but this only allows conversion FROM epub.

Does anybody know what's going on?

Thanks in advance.