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 but-
            ton  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  there-
            fore 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 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.


AUTHOR
       Eject  was  written  by  Jeff  Tranter (tranterATpobox.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  (tutimuraATnn.jp),  with  thanks  to  Roland  Krivanek  (kri-
       vanekATfmph.sk) and his cdrom_speed command.

       The  -T  option  was  added  by  Sybren  Stuvel  (sybrenATthirdtower.com),  with big thanks to Benjamin Schwenk (benjamin-
       schwenkATyahoo.de).

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


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



Linux                                                      12 May 2005                                                  EJECT(1)