How to create a live usb from running live cd for fedora 15?
Creating a USB stick from a running live environment
If you are already running a live CD, DVD, or USB and want to convert that into a bootable USB stick, run the following command:
su -c "livecd-iso-to-disk /run/initramfs/livedev /dev/sdX"
(For versions before Fedora 17, use /dev/live instead of /run/initramfs/livedev.)
The above instructions are mentioned in https://fedoraproject.org/wiki/How_to_create_and_use_Live_USB#dd but when I enter these in the terminal, it says command not found. Please help.