eject - eject removable media

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
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 (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).