Linux eject cd rom

Синтаксис:

-V или –version: записать номер версии в консоль и выйти.

Синтаксис:

Выход:

Состояние выхода: при успешной операции возвращается 0, а при неудачной операции возвращается 1.

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Linux eject command

On Unix-like operating systems, the eject command allows removable media (typically an optical disc) 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.

This page describes the GNU/Linux version of eject.

Description

When the eject command is executed, the device corresponding to is ejected. The name is a device file or mount point, either a full path or with the leading «/dev«, «/media» or «/mnt» omitted. If no name is specified, the default name «cdrom» is used.

There are four different methods of ejecting, depending on whether the device is a CD-ROM, SCSI device, removable floppy, or tape. By default, eject tries all four methods in order until it succeeds.

If the device is currently mounted, it is unmounted before ejecting.

Syntax

Options

Examples

Eject the default device.

Eject a device or mount point named cdrom.

Same as above, but using the device name.

Same as above, using the mount point.

Eject 4th IDE device.

Eject first SCSI device.

Eject using SCSI partition name.

Eject 5th disc on multi-disc changer.

Related commands

mount — Mount a file system so that its data may be accessed.
umount — Unmount a file system, making its data inaccessible.

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How to eject CD/DVD tray from command line on Linux

If you are new to the command line of Linux, you may have read/heard that the command line is one of the most powerful features of Linux. Yes, this is true. Almost all the things you can do through the GUI, you can also do through the command line.

Even more, you can even eject/close your system’s CD/DVD drive from the command line. If this has piqued your interest and you want to know more about it, then read on as this article explains how you can do this.

Please note that all commands and instructions mentioned in this guide have been tested on Ubuntu 20.04 LTS.

Eject CD/DVD drive from command line in Linux with «eject» command

Yes, you can do this with the «eject» command. The command’s man page describes it as follows:

«Eject allows you to eject removable media (typically a CD-ROM, a floppy disk, a tape, or a JAZ or ZIP disk) under software control. The command can also control some multi-disc CD-ROM changers, the auto-eject feature supported by some devices, and the closing of the disc tray of some CD-ROM drives.»

To perform the operation, simply run the following command:

In case this command doesn’t work, you can try the following:

And if none of these work, you’ll have to look for the correct device in the list generated by the following command:

To close the drive, use the following command:

Please note that not all devices support the aforementioned close command. For more information on eject, head to its man page.

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eject(1) — Linux man page

Synopsis

Description

Eject allows removable media (typically a CD-ROM, floppy disk, tape, or JAZ or ZIP disk) 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.

The device corresponding to is ejected. The name can be a device file or mount point, either a full path or with the leading «/dev», «/media» or «/mnt» omitted. If no name is specified, the default name «cdrom» is used.

There are four different methods of ejecting, depending on whether the device is a CD-ROM, SCSI device, removable floppy, or tape. By default eject tries all four methods in order until it succeeds.

If the device is currently mounted, it is unmounted before ejecting.

Command-line Options

Long Options

-h —help
-v —verbose
-d —default
-a —auto
-c —changerslot
-t —trayclose
-T —traytoggle
-x —cdspeed
-X —listspeed
-n —noop
-r —cdrom
-s —scsi
-f —floppy
-q —tape
-V —version
-p —proc
-m —no-unmount

Examples

Eject the default device: eject

Eject a device or mount point named cdrom: eject cdrom

Eject using device name: eject /dev/cdrom

Eject using mount point: eject /mnt/cdrom/

Eject 4th IDE device: eject hdd

Eject first SCSI device: eject sda

Eject using SCSI partition name (e.g. a ZIP drive): eject sda4

Select 5th disc on multi-disc changer: eject -v -c4 /dev/cdrom

Turn on auto-eject on a SoundBlaster CD-ROM drive: eject -a on /dev/sbpcd

Exit Status

Returns 0 if operation was successful, 1 if operation failed or command syntax was not valid.

Notes

Eject only works with devices that support one or more of the four methods of ejecting. This includes most CD-ROM drives (IDE, SCSI, and proprietary), some SCSI tape drives, JAZ drives, ZIP drives (parallel port, SCSI, and IDE versions), and LS120 removable floppies. Users have also reported success with floppy drives on Sun SPARC and Apple Macintosh systems. If eject does not work, it is most likely a limitation of the kernel driver for the device and not the eject program itself.

The -r, -s, -f, and -q options allow controlling which methods are used to eject. More than one method can be specified. If none of these options are specified, it tries all four (this works fine in most cases).

Eject may not always be able to determine if the device is mounted (e.g. if it has several names). If the device name is a symbolic link, eject will follow the link and use the device that it points to.

If eject determines that the device can have multiple partitions, it will attempt to unmount all mounted partitions of the device before ejecting. If an unmount fails, the program will not attempt to eject the media.

You can eject an audio CD. Some CD-ROM drives will refuse to open the tray if the drive is empty. Some devices do not support the tray close command.

If the auto-eject feature is enabled, then the drive will always be ejected after running this command. Not all Linux kernel CD-ROM drivers support the auto-eject mode. There is no way to find out the state of the auto-eject mode.

You need appropriate privileges to access the device files. Running as root or setuid root is required to eject some devices (e.g. SCSI devices).

The heuristic used to find a device, given a name, is as follows. If the name ends in a trailing slash, it is removed (this is to support filenames generated using shell file name completion). If the name starts with ‘.’ or ‘/’, it tries to open it as a device file or mount point. If that fails, it tries prepending ‘/dev/’, ‘/media/’ ,’/mnt/’, ‘/dev/cdroms’, ‘/dev/rdsk/’, ‘/dev/dsk/’, and finally ‘./’ to the name, until a device file or mount point is found that can be opened. The program checks /etc/mtab for mounted devices. If that fails, it also checks /etc/fstab for mount points of currently unmounted devices.

Creating symbolic links such as /dev/cdrom or /dev/zip is recommended so that eject can determine the appropriate devices using easily remembered names.

To save typing you can create a shell alias for the eject options that work for your particular setup.

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