How to burn an ISO from the command line

Keep forgetting dd syntax. Here's how to write an iso directly to media (optical, usb) from a (linux) command prompt

First, make sure the device is unmounted. Here, my USB drive is /dev/sdb. /dev/sdb1 automounts so:

umount /dev/sdb1

Then write the disk

sudo dd if=./ubuntu-rescue-remix-10-10.iso of=/dev/sdb