Umount and Eject CD Rom Tray or DVD Rom Tray using Linux eject Command.

   How to umount CD or DVD and eject the disk from the CD drive or DVD drive in one go...  On Linux system you can use the eject command to umount and then eject the CD or DVD drive.  The example below show the execution of eject command on Linux Fedora system.  But before you execute eject command to eject CD rom drive tray or eject DVD drive tray, make sure that you not in the mounted path of CD or DVD disk, other wise the eject command give you error message that say something like "device is busy"  .............