I don't know which application the ubuntu GUI launches to encrypt your /home directory for example, but you can find out by checking the properties of that launcher (the interface that load/executes a program), in which you would find the application name and any parameters being used.
You could also, in a terminal choose an encryption application such as bcrypt or truecrypt or any other of your choosing: see which one you prefer, either via reviews (gives you an idea) or by installing and testing one of more types, and using a practice directory, before making your final selection.
example encryption programs..http://www.truecrypt.org/http://www.linuxinsider.com/story/73175.html--truecrypt guide..
http://www.zdnet.com/pointsec-full-disk ... 039222213/http://www.tomshardware.com/reviews/loc ... 303-2.htmlsecurity program examples(+ encrypt if mentioned)..http://www.linuxplanet.com/linuxplanet/reviews/6479/2/Another item worth consideration is a password manager: enables you to keep a fairly good password passphrase that you can remember to get into your list of passwords..
http://www.techradar.com/news/software/ ... ?artc_pg=3