MAN page from Old RedHat 5.X eject-2.0.2-1.i386.rpm

EJECT

Section: User Commands (1)
Updated: 21 January 1999
Index

NAME

eject - eject removable media

SYNOPSIS

eject -h
eject [-vnrsfq] [<name>]
eject [-vn] -d
eject [-vn] -a on|off|1|0 [<name>]
eject [-vn] -c slot [<name>]
eject [-vn] -t [<name>]

DESCRIPTION

Ejectallows removable media (typically a CD-ROM, floppy disk, tape, or JAZor ZIP disk) to be ejected under software control. The command canalso control some multi-disc CD-ROM changers, the auto-eject featuresupported by some devices, and close the disc tray of some CD-ROMdrives.

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

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

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

COMMAND-LINE OPTIONS

-h: This option causesejectto display a brief description of the command options.
-v: This makesejectrun in verbose mode; more information is displayed about what thecommand is doing.
-d: If invoked with this option,ejectlists the default device name.
-a on|1|off|0: This option controls the auto-eject mode, supported by some devices.When enabled, the drive automatically ejects when the device isclosed.
-c <slot>: With this option a CD slot can be selected from an ATAPI/IDE CD-ROMchanger. Linux 2.0 or higher is required to use this feature. TheCD-ROM drive can not be in use (mounted data CD or playing a music CD)for a change request to work. Please also note that the first slot ofthe changer is referred to as 0, not 1.
-t: With this option the drive is given a CD-ROM tray close command. Notall devices support this command.
-n: With this option the selected device is displayed but no action isperformed.
-r: This option specifies that the drive should be ejected using aCDROM eject command.
: -sThis option specifies that the drive should be ejected usingSCSI commands.
-f: This option specifies that the drive should be ejected using aremovable floppy disk eject command.
-q: This option specifies that the drive should be ejected using atape drive offline command.

LONG OPTIONS

All options have corresponding long names, as listed below. The longnames can be abbreviated as long as they are unique.

-h --help
-v --verbose
-d --default
-a --auto
-c --changerslot
-t --trayclose
-n --noop
-r --cdrom
-s --scsi
-f --floppy
-q --tape

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 mult-disc changer:

: eject -v -c5 /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 commandsyntax was not valid.

NOTES

Ejectonly works with devices that support one or more of the four methodsof ejecting. This includes most CD-ROM drives (IDE, SCSI, andproprietary), some SCSI tape drives, JAZ drives, ZIP drives (parallelport, SCSI, and IDE versions), and LS120 removable floppies. Usershave also reported success with floppy drives on Sun SPARC and AppleMacintosh systems. Ifejectdoes not work, it is most likely a limitation of the kernel driverfor the device and not theejectprogram itself.

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

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

Ifejectdetermines that the device can have multiple partitions, it willattempt to unmount all mounted partitions of the device beforeejecting. If an unmount fails, the program will not attempt to ejectthe media.

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

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

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

The heuristic used to find a device, given a name, is as follows. Ifthe name ends in a trailing slash, it is removed (this is to supportfilenames generated using shell file name completion). If the namestarts with '.' or '/', it tries to open it as a device file or mountpoint. If that fails, it tries prepending '/dev/', '/mnt/',device file or mount point is found that can be opened. The programchecks /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 recommendedso thatejectcan determine the appropriate devices using easily remembered names.

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

AUTHOR

Ejectwas written by Jeff Tranter (tranterAATTpobox.com) and is releasedunder the conditions of the GNU General Public License. See the fileCOPYING and notes in the source code for details.

This document was created byman2html,using the manual pages.