EJECT(1)



EJECT(1)                         User Commands                        EJECT(1)

NAME
       eject - eject removable media

SYNOPSIS
       eject [options] device|mountpoint

DESCRIPTION
       eject  allows  removable  media (typically a CD-ROM, floppy disk, tape,
       JAZ, ZIP or USB disk) to be ejected under software control.   The  com-
       mand  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  device or mountpoint is ejected.  If no
       name is specified, the default name /dev/cdrom is used.  The device may
       be   addressed  by  device  name  (e.g.,  'sda'),  device  path  (e.g.,
       '/dev/sda'), UUID=uuid or LABEL=label tags.

       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 a device partition is specified, the whole-disk device is used.

       If the device or a device partition is currently  mounted,  it  is  un-
       mounted  before  ejecting.   The  eject  is processed on exclusive open
       block device file descriptor if --no-unmount or --force are not  speci-
       fied.

OPTIONS
       -a, --auto on|off
              This  option controls the auto-eject mode, supported by some de-
              vices.  When enabled, the drive automatically  ejects  when  the
              device is closed.

       -c, --changerslot slot
              With this option a CD slot can be selected from an ATAPI/IDE CD-
              ROM changer.  The CD-ROM drive cannot 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.

       -d, --default
              List the default device name.

       -F, --force
              Force eject, don't check device type, don't open device with ex-
              clusive lock.  The successful result may be  false  positive  on
              non hot-pluggable devices.

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

       -h, --help
              Display help text and exit.

       -i, --manualeject on|off
              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 inadver-
              tently pressed.

       -M, --no-partitions-unmount
              The option tells eject to not try to unmount other partitions on
              partitioned devices.  If another partition is still mounted, the
              program will not attempt to eject the media.  It will attempt to
              unmount only the device or mountpoint given on the command line.

       -m, --no-unmount
              The  option  tells  eject to not try to unmount at all.  If this
              option is not specified than eject opens the device with  O_EXCL
              flag to be sure that the device is not used (since v2.35).

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

       -p, --proc
              This option allows you to use  /proc/mounts  instead  /etc/mtab.
              It also passes the -n option to umount(8).

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

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

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

       -T, --traytoggle
              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.

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

       -V, --version
              Display version information and exit.

       -v, --verbose
              Run in verbose mode; more information is  displayed  about  what
              the command is doing.

       -X, --listspeed
              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 drives may not cor-
              rectly report the speed and therefore this option does not  work
              with them.

       -x, --cdspeed speed
              With  this  option the drive is given a CD-ROM select speed com-
              mand.  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.

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  it-
       self.

       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 op-
       tions 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  (see also --no-partitions-unmount).  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 driv-
       ers 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 is required to eject some devices (e.g., SCSI devices).

AUTHORS
       Jeff Tranter <tranter@pobox.com> - original author.
       Karel Zak <kzak@redhat.com> and Michal  Luscon  <mluscon@redhat.com>  -
       util-linux version.

SEE ALSO
       findmnt(8), lsblk(8), mount(8), umount(8)

AVAILABILITY
       The  eject  command  is part of the util-linux package and is available
       from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-
       linux/>.

Linux                             April 2012                          EJECT(1)

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