EJECT(1)                                                           User Commands                                                          EJECT(1)

NAME

       eject - eject removable media

SYNOPSIS

       eject -h
       eject [-vnrsfmqp] [<name>]
       eject [-vn] -d
       eject [-vn] -a on|off|1|0 [<name>]
       eject [-vn] -c slot [<name>]
       eject [-vn] -i on|off|1|0 [<name>]
       eject [-vn] -t [<name>]
       eject [-vn] -T [<name>]
       eject [-vn] -x <speed> [<name>]
       eject [-vn] -X [<name>]
       eject -V

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 <name> 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
       -h   This option causes eject to display a brief description of the command options.

       -v   This makes eject run in verbose mode; more information is displayed about what the command is doing.

       -d   If invoked with this option, eject lists 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 is
            closed.

       -c <slot>
            With this option a CD slot can be selected from an ATAPI/IDE CD-ROM changer. Linux 2.0 or higher is required to use this feature.  The
            CD-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 of the changer is referred to as 0, not 1.

       -i on|1|off|0
            This option controls locking of the hardware eject button. When enabled, the drive will not be ejected when  the  button  is  pressed.
            This is useful when you are carrying a laptop in a bag or case and don't want it to eject if the button is inadvertently pressed.

       -t   With this option the drive is given a CD-ROM tray close command. Not all devices support this command.

       -T   With  this  option  the drive is given a CD-ROM tray close command if it's opened, and a CD-ROM tray eject command if it's closed. Not
            all devices support this command, because it uses the above CD-ROM tray close command.

       -x <speed>
            With this option the drive is given a CD-ROM select speed command.  The speed argument is a number indicating the desired speed  (e.g.
            8  for  8X  speed), or 0 for maximum data rate. Not all devices support this command and you can only specify speeds that the drive is
            capable of. Every time the media is changed this option is cleared. This option can be used alone, or with the -t and -c options.

       -X   With this option the CD-ROM drive will be probed to detect the available speeds. The output is a list of speeds which can be  used  as
            an  argument  of  the  -x  option.  This only works with Linux 2.6.13 or higher, on previous versions solely the maximum speed will be
            reported. Also note that some drive may not correctly report the speed and therefore this option does not work with them.

       -n   With this option the selected device is displayed but no action is performed.

       -r   This option specifies that the drive should be ejected using a CDROM eject command.

       -s   This option specifies that the drive should be ejected using SCSI commands.

       -f   This option specifies that the drive should be ejected using a removable floppy disk eject command.

       -q   This option specifies that the drive should be ejected using a tape drive offline command.

       -p   This option allow you to use /proc/mounts instead /etc/mtab. It also passes the -n option to umount(1).

       -m   This option allows eject to work with device  drivers  which  automatically  mount  removable  media  and  therefore  must  be  always
            mount(1)ed.   The  option  tells  eject  to  not  try  to  unmount  the  given device, even if it is mounted according to /etc/mtab or
            /proc/mounts.

       -V   This option causes eject to display the program version and exit.

LONG OPTIONS

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

       -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 limita-
       tion 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.

AUTHOR

       Eject was written by Jeff Tranter (tranter@pobox.com) and is released under the conditions of the GNU General Public License. See the  file
       COPYING and notes in the source code for details.

       The  -x  option was added by Nobuyuki Tsuchimura (tutimura@nn.iij4u.or.jp), with thanks to Roland Krivanek (krivanek@fmph.uniba.sk) and his
       cdrom_speed command.

       The -T option was added by Sybren Stuvel (sybren@thirdtower.com), with big thanks to Benjamin Schwenk (benjaminschwenk@yahoo.de).

       The -X option was added by Eric Piel (Eric.Piel@tremplin-utc.net).

SEE ALSO

       mount(2), umount(2), mount(8), umount(8)
       /usr/src/linux/Documentation/cdrom/

Linux                                                               12 May 2005                                                           EJECT(1)