Burn a pre-compiled .img file in an SD card in Linux

Many pre-compiled images for Android are in this type (.img) after unzipping.
These are instructions for Linux users.

1. Insert the SD card
2. Open the terminal
3. >fdisk -l  , to find out the X in the /dev/sdX
4. >umount /dev/sdX , (run as root)
5. Navigate to the directory of the unzipped image
6. >dd if=name_of_the_image.img of=/dev/sdX bs=1
7. After complition the SD card is ready for booting!

or


Use ImageWriter (as a root user)
>apt-get install usb-imagewriter
for installation and then run the application
>imagewriter (to see the GUI)
insert the image and the location of the SD card and press OK.