Ubuntu on a USB pen/drive

Easy tool to create a bootable USB drive, for multiple distributions.

Install:
sudo apt-get install p7zip p7zip-full mtools
wget http://unetbootin.sourceforge.net/unetbootin-linux-latest
chmod +x unetbootin-linux-*
sudo ./unetbootin-linux-XXX

Reference: http://unetbootin.sourceforge.net/