Linux is included in 11th std Computer Science syllabus in Tamil Nadu.
Linux Users Groups should help the Teachers and Students to understand
the Linux and FOSS concepts.
One Day One Command
eject — Eject the removable media
Eject allows removable media (like CD-ROM, Floppy, Tape, JAZ, ZIP) to
be ejected under software control. The command can also control some
multi-disc CD-ROM changers, the auto-eject feature supported by some
devices, and close the disc tray of some CD-ROM drives.
$ eject — Eject the default device, mostly CD.
$ eject -v — Same as above and show more info.
$ eject /dev/cdrom — Eject CD using device file name.
$ eject -t — Close the drive tray.
$ eject -vt — Same as above and show more info.
Read: man eject