Flash OS images to SD cards & USB drives & TF cards safely and easily using etcher

install tools:

　　wget https://github.com/resin-io/etcher/releases/download/v1.4.5/etcher-cli-1.4.5-linux-x64.tar.gz

   　tar zvxf etcher-cli-1.4.5-linux-x64.tar.gz

　　cd etcher-cli-1.4.5-linux-x64-dist/

burn img to device :

　　example, burn rootfs.img to tf card (sdd)

　   ./etcher -d /dev/sdd ../fdimage.img