A Live CD from Xubuntu or Ubuntu does not have any Bitcoin wallet manager.
How do you generate a paper wallet on a Live CD from Xubuntu or Ubuntu?
Download the source code from
bitcoinpaperwallet.com or
bitaddress.org, put it on an USB-stick, and copy it to your offline LIVE Linux environment. Then unplug it before you use it.
Bitcoin Paper Wallet (Live CD) is a customized version of Ubuntu.
Correct. You can of course just order it and go the easy way.