$ curl cheat.sh/
 cheat.sheets:eject 
# eject
# eject removable media
# You can also close the tray using certain options.

# Eject any available device
# CD-ROM, floppy disk, tape, or JAZ or ZIP disk
eject

# Eject a device by its name
eject /dev/cdrom

# Close the tray using eject command
eject -t

# Lock the hardware eject button
eject -i on

# Unlock the hardware eject button
eject -i off

 tldr:eject 
# eject
# Eject cds, floppy disks and tape drives.
# More information: <https://manned.org/eject>.

# Display the default device:
eject -d

# Eject the default device:
eject

# Eject a specific device (the default order is cd-rom, scsi, floppy and tape):
eject /dev/cdrom

# Toggle whether a device's tray is open or closed:
eject -T /dev/cdrom

# Eject a cd drive:
eject -r /dev/cdrom

# Eject a floppy drive:
eject -f /mnt/floppy

# Eject a tape drive:
eject -q /mnt/tape

$
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