compile:

g++ bootusb.cpp -o bootusb

execute:

0. Loggin root

  'su' on debian or 'sudo su' on ubuntu

1. Copy exec to /usr/bin/

  cp bootusb /usr/bin/bootusb

2. Write on the terminal

  bootusb /path/to/image.iso /dev/sdX

3. Format the usb how FAT16 on '/dev/sdX1' in the process

4. Be Happy :)