eject - eject removable media.
Eject the default device:
eject
Display the default device name:
eject -d
Close the CD-ROM tray:
eject -t
Open or close the CD-ROM tray:
eject -T
Eject tape drive:
eject /dev/nst0
Display eject command version:
eject -V
Display eject command help:
eject -h